Colleges Indiana Jones Attended, Graduated from, and Taught at Timeline

Updated(9/10/10)be careful some of it may still be incorrect.

September 191? or April 1920-Attended the University of Chicago to study Archaeology(April 1920:With the horrors of war behind him,Indy returns to the United States to continue his studies,this time at the University of Chicago-according to The World of Indiana Jones).
June to July 1920-Indy leaves Chicago for a brief while during summer break(source:The World of Indiana Jones).
1922-Graduated from the University of Chicago(source:The World of Indiana Jones).
October 1922–Post graduate studies,Linguistics at the Université de Paris,La Sorbonne.
Late 1922 to Early 1923-Switches from Linguistics to Archaeology and gets a part-time job in the archaeology lab at the Université de Paris,La Sorbonne.
1924-Still a graduate in France,Indy goes on a dig with Roland Walcott and other students(source:The World of Indiana Jones).
Spring 1925–Receives Ph.D. at the Université de Paris,La Sorbonne and lands a job at London University via M.Brody (1925 Feb-The Ultimate Guide).
Summer 1925-Heading to the job in the summer 1925(Dance of the Giants).
June 1925–Assistant Professor,Celtic Archaeology at the University of London.
1925-Indy eventually taught at Marshall College.
June 27,1925-Abner Ravenwood requested Indy's help on an expedition before Indy returned to his teaching obligations at Marshall College.
1925 to 1926-Was working in the field as an Archaeologist.
Spring 1927–Agrees to quit the University of London.
May 1927–Quits the University of London and returns to the University of Chicago.
June 1927–Denied Celtic Archaeology teaching position at the University of Chicago.
Fall 1927-Begins as Professor,Archaeology at a small New England college.
May 1928–Still teaching at the same college in New England.
May to June 1928-Indy spends the 1927-1928 school year teaching at the small New England college.
1928 to 1930-Was working in the field as an Archaeologist.
January? 1930–Took a sabbatical from Princeton,teaching at the University of London.
February? 1930–First he completes some business at the University of London,then resumes his teaching job at Princeton,New Jersey.
1931 to 1933-Was working in the field as an Archaeologist.
1933-Taught again at Princeton University.
March 1933–Fired from Princeton for "grave robbing".
March 1933 to October 1933–Took a sabbatical.
October 1933-Taught in the Department of Art and Archaeology at Princeton University.
1933-Working in the field as an Archaeologist.
1933 to Early Winter of 1934(Hollow Earth) and on to 1935–Professor of Archaeology in the Department of Archaeology at Princeton University.
1935-Taught at Barnett College,New York.
1935-Was working in the field as an Archaeologist.
July 1935-Resigned from Princeton University.
July 1935-Taught at Marshall College,Bedford,Connecticut.
1935 to 1936-Was working in the field as an Archaeologist.
1936-Taught again at Marshall College.
1936 to 1937-Was working in the field as an Archaeologist.
1937-Indy gets a new job at Barnett College in New York,but loses the Archaeology 101 course to a Peruvian woman who studied at Harvard,Yale,and Sorbonne(source:The World of Indiana Jones).
Fall 1937-Taught at Barnett College.
January 1938 to February 1938-Taught again at Barnett College.
February 1938-Working in the field as an Archaeologist(Indiana Jones finally recovers the Cross of Coronado from the man who "aquired" it back in 1912).
March 1938-Taught again at Barnett College.
1938-Working in the field as an Archaeologist(Indiana Jones is contacted by a collector of antiquities,Walter Donovan).
1938 to Late 1939-Was working in the field as an Archaeologist.
December 1939-Joined World War II.
May 1939-Teaching at Barnett College when a mysterious stranger arrives with an ancient key and Indiana looks up a former colleague,Sophia Hapgood.
1939-Working in the field as an Archaeologist(Indy had a few adventures with the mobsters and Indy meets with some of the supposedly extinct Indians).
1939-Returns to teaching at Barnett College.
1939 to 1941-Was working in the field as an Archaeologist.
1942-Joined O.S.S. as part of World War II.
1943 to 1951-Was working in the field as an Archaeologist.
Sometime between 1951 and 1957-Indy left Barnett College,and returned to Marshall College in Bedford,Connecticut.

I apologize for any incorrect information.My sources are limited.I welcome any help.

Indy was still working for the OSS as of the Summer of 1943, according to the Army of the Dead book.

His OSS service in my opinion probably dates from 1942-early 1947. He could've spent 1942-1945 spying on the Germans and Japanese (Indy mentions missions in the Pacific), and 1945-1947 (just prior to the OSS becoming the CIA) spying on the Soviets. I don't think he was with the OSS any later than the beginning of 1947, and he couldn't have been with the OSS any earlier than 1942 since the OSS didn't exist until 1942.
Of course, he wasn't working for them constantly between '42 and '47; He probably was called on and off on assignment. He says he and Mac did ''20, 30 missions together.'' I'm sure if 20-30 missions is possible between 1942 and 1947. He also was awarded medals, apparently a lot, and reached the rank of Colonel, so I'd say 5 years probably fits. The OSS might've known of his service during WWI which might've helped him reach the rank of Colonel faster.

Updated(4/19/11)be careful some of it may still be incorrect.

September 191? or April 1920-Attended the University of Chicago to study Archaeology(April 1920:With the horrors of war behind him,Indy returns to the United States to continue his studies,this time at the University of Chicago-according to The World of Indiana Jones).
June to July 1920-Indy leaves Chicago for a brief while during summer break(source:The World of Indiana Jones).
1922-Graduated from the University of Chicago(source:The World of Indiana Jones).
October 1922–Post graduate studies,Linguistics at the Université de Paris,La Sorbonne.
Late 1922 to Early 1923-Switches from Linguistics to Archaeology and gets a part-time job in the archaeology lab at the Université de Paris,La Sorbonne.
1924-Still a graduate in France,Indy goes on a dig with Roland Walcott and other students(source:The World of Indiana Jones).
Spring 1925–Receives Ph.D. at the Université de Paris,La Sorbonne and lands a job at London University via M.Brody (1925 Feb-The Ultimate Guide).
Summer 1925-Heading to the job in the summer 1925(Dance of the Giants).
June 1925–Assistant Professor,Celtic Archaeology at the University of London.
1925-Indy eventually taught at Marshall College.
June 27,1925-Abner Ravenwood requested Indy's help on an expedition before Indy returned to his teaching obligations at Marshall College.
1925 to 1926-Was working in the field as an Archaeologist.
Spring 1927–Agrees to quit the University of London.
May 1927–Quits the University of London and returns to the University of Chicago.
June 1927–Denied Celtic Archaeology teaching position at the University of Chicago.
Fall 1927-Begins as Professor,Archaeology at a small New England college.
May 1928–Still teaching at the same college in New England.
May to June 1928-Indy spends the 1927-1928 school year teaching at the small New England college.
1928 to 1930-Was working in the field as an Archaeologist.
January? 1930–Took a sabbatical from Princeton,teaching at the University of London.
February? 1930–First he completes some business at the University of London,then resumes his teaching job at Princeton,New Jersey.
1931 to 1933-Was working in the field as an Archaeologist.
1933-Taught again at Princeton University.
March 1933–Fired from Princeton for "grave robbing".
March 1933 to October 1933–Took a sabbatical.
October 1933-Taught in the Department of Art and Archaeology at Princeton University.
1933-Working in the field as an Archaeologist.
1933 to Early Winter of 1934(Hollow Earth) and on to 1935–Professor of Archaeology in the Department of Archaeology at Princeton University.
1935-Taught at Barnett College,New York.
1935-Was working in the field as an Archaeologist.
July 1935-Resigned from Princeton University.
July 1935-Taught at Marshall College,Bedford,Connecticut.
1935 to 1936-Was working in the field as an Archaeologist.
1936-Taught again at Marshall College.
1936 to 1937-Was working in the field as an Archaeologist.
1937-Indy gets a new job at Barnett College in New York,but loses the Archaeology 101 course to a Peruvian woman who studied at Harvard,Yale,and Sorbonne(source:The World of Indiana Jones).
Fall 1937-Taught at Barnett College.
January 1938 to February 1938-Taught again at Barnett College.
February 1938-Working in the field as an Archaeologist(Indiana Jones finally recovers the Cross of Coronado from the man who "aquired" it back in 1912).
March 1938-Taught again at Barnett College.
1938-Working in the field as an Archaeologist(Indiana Jones is contacted by a collector of antiquities,Walter Donovan).
1938 to Late 1939-Was working in the field as an Archaeologist.
December 1939-Joined World War II.
May 1939-Teaching at Barnett College when a mysterious stranger arrives with an ancient key and Indiana looks up a former colleague,Sophia Hapgood.
1939-Working in the field as an Archaeologist(Indy had a few adventures with the mobsters and Indy meets with some of the supposedly extinct Indians).
1939-Returns to teaching at Barnett College.
1939 to 1941-Was working in the field as an Archaeologist.
1942-Joined O.S.S. as part of World War II.
Summer 1943-Still working for the O.S.S.(source:Army of the Dead book).
1943 to 1945-Most likely spied on the Germans and the Japanese(source:Kingdom of the Crystal Skull-Indy mentions missions in Europe and the Pacific and he mentioned he was a double agent in Berlin,Germany).
1945 to Early 1947-Most likely spied on the Soviets(just prior to the O.S.S. becoming the C.I.A.)(Indy eventually gained the title of Colonel during his time with the O.S.S.-source:Kingdom of the Crystal Skull).
Mid to Late 1947 to 1951-Was working in the field as an Archaeologist.
Sometime between 1951 and 1957-Indy left Barnett College,and returned to Marshall College in Bedford,Connecticut.

I apologize for any incorrect information.My sources are limited.I welcome any help.

Terrific work, AnnieJones.

Thank you michael.

In those days (1920's and before), colleges were not as sticky about
high school graduations, SAT tests, and other modern hoops that
college applicants have to jump through.

And, of course, Indy was "home schooled" by his father, and his
knowledge of topics would have shown up in entrance interviews.

According to the manual for Infernal Machine, which is set in 1947, Indy had no further ties to the OSS or CIA the post war period. Infact, the first level of the game has him in Utah, on a dig for Barnett College. While there, Indy gets visited by Sophia Hapgood, who's an officer for the CIA. Even the dialogue states that he's been out the loop for a while.

Updated(5/3/11)be careful some of it may still be incorrect.

Colleges Indiana Jones Attended,Graduated from,and Taught at Timeline.

September 191? or April 1920-Attended the University of Chicago to study Archaeology(April 1920:With the horrors of war behind him,Indy returns to the United States to continue his studies,this time at the University of Chicago-according to The World of Indiana Jones).
June to July 1920-Indy leaves Chicago for a brief while during summer break(source:The World of Indiana Jones).
1922-Graduated from the University of Chicago(source:The World of Indiana Jones).
October 1922–Post graduate studies,Linguistics at the Université de Paris,La Sorbonne.
Late 1922 to Early 1923-Switches from Linguistics to Archaeology and gets a part-time job in the archaeology lab at the Université de Paris,La Sorbonne.
1924-Still a graduate in France,Indy goes on a dig with Roland Walcott and other students(source:The World of Indiana Jones).
Spring 1925–Receives Ph.D. at the Université de Paris,La Sorbonne and lands a job at London University via M.Brody (1925 Feb-The Ultimate Guide).
Summer 1925-Heading to the job in the summer 1925(Dance of the Giants).
June 1925–Assistant Professor,Celtic Archaeology at the University of London.
1925-Indy eventually taught at Marshall College.
June 27,1925-Abner Ravenwood requested Indy's help on an expedition before Indy returned to his teaching obligations at Marshall College.
1925 to 1926-Was working in the field as an Archaeologist.
Spring 1927–Agrees to quit the University of London.
May 1927–Quits the University of London and returns to the University of Chicago.
June 1927–Denied Celtic Archaeology teaching position at the University of Chicago.
Fall 1927-Begins as Professor,Archaeology at a small New England college.
May 1928–Still teaching at the same college in New England.
May to June 1928-Indy spends the 1927-1928 school year teaching at the small New England college.
1928 to 1930-Was working in the field as an Archaeologist.
January? 1930–Took a sabbatical from Princeton,teaching at the University of London.
February? 1930–First he completes some business at the University of London,then resumes his teaching job at Princeton,New Jersey.
1931 to 1933-Was working in the field as an Archaeologist.
1933-Taught again at Princeton University.
March 1933–Fired from Princeton for "grave robbing".
March 1933 to October 1933–Took a sabbatical.
October 1933-Taught in the Department of Art and Archaeology at Princeton University.
1933-Working in the field as an Archaeologist.
1933 to Early Winter of 1934(Hollow Earth) and on to 1935–Professor of Archaeology in the Department of Archaeology at Princeton University.
1935-Taught at Barnett College,New York.
1935-Was working in the field as an Archaeologist.
July 1935-Resigned from Princeton University.
July 1935-Taught at Marshall College,Bedford,Connecticut.
1935 to 1936-Was working in the field as an Archaeologist.
1936-Taught again at Marshall College.
1936 to 1937-Was working in the field as an Archaeologist.
1937-Indy gets a new job at Barnett College in New York,but loses the Archaeology 101 course to a Peruvian woman who studied at Harvard,Yale,and Sorbonne(source:The World of Indiana Jones).
Fall 1937-Taught at Barnett College.
January 1938 to February 1938-Taught again at Barnett College.
February 1938-Working in the field as an Archaeologist(Indiana Jones finally recovers the Cross of Coronado from the man who "aquired" it back in 1912).
March 1938-Taught again at Barnett College.
1938-Working in the field as an Archaeologist(Indiana Jones is contacted by a collector of antiquities,Walter Donovan).
1938 to Late 1939-Was working in the field as an Archaeologist.
December 1939-Joined World War II.
May 1939-Teaching at Barnett College when a mysterious stranger arrives with an ancient key and Indiana looks up a former colleague,Sophia Hapgood.
1939-Working in the field as an Archaeologist(Indy had a few adventures with the mobsters and Indy meets with some of the supposedly extinct Indians).
1939-Returns to teaching at Barnett College.
1939 to 1941-Was working in the field as an Archaeologist.
1942-Joined O.S.S. as part of World War II.
Summer 1943-Still working for the O.S.S.(source:Army of the Dead book).
1943 to 1945-Most likely spied on the Germans and the Japanese(source:Kingdom of the Crystal Skull-Indy mentions missions in Europe and the Pacific and he mentioned he was a double agent in Berlin,Germany).
1945 to Early 1947-Most likely spied on the Soviets(just prior to the O.S.S. becoming the C.I.A.)(Indy eventually gained the title of Colonel during his time with the O.S.S.-source:Kingdom of the Crystal Skull).
1947-Indy had no further ties to the O.S.S. or the C.I.A. in the post war period.He then went on a dig in Utah,for Barnett College.While on the dig,Sophia Hapgood,an officer for the C.I.A.,shows up(source:The Infernal Machine manual and the Infernal Machine first level dialogue).
Mid to Late 1947 to 1951-Was working in the field as an Archaeologist.
Sometime between 1951 and 1957-Indy left Barnett College,and returned to Marshall College in Bedford,Connecticut.

I apologize for any incorrect information.My sources are limited.I welcome any help.
Thank you everyone for your help.It is greatly appreciated.

Also not to forget maybe these small details:

1922 Indy goes on an expedition with his classmate Magnus Völler and his professor Charles Kingston to excavate and explore some Maya temple in Panama. (source: Staff of Kings computer game)
1929 The Marshall College financed the Jastro-Expedition to Iceland and Indy got his first real job leading an excavation. He also met there Sophia Hapgood for the first time in the "coldest year of his life". (source: Fate of Atlantis computer game)

Updated(6/20/11)be careful some of it may still be incorrect.

Colleges Indiana Jones Attended,Graduated from,and Taught at Timeline.

September 191? or April 1920-Attended the University of Chicago to study Archaeology(April 1920:With the horrors of war behind him,Indy returns to the United States to continue his studies,this time at the University of Chicago-according to The World of Indiana Jones).
June to July 1920-Indy leaves Chicago for a brief while during summer break(source:The World of Indiana Jones).
1922-Indy goes on an expedition with his classmate Magnus Völler and his professor Charles Kingston to excavate and explore some Maya temple in Panama(source:Staff of Kings computer game).
1922-Graduated from the University of Chicago(source:The World of Indiana Jones).
October 1922?Post graduate studies,Linguistics at the Université de Paris,La Sorbonne.
Late 1922 to Early 1923-Switches from Linguistics to Archaeology and gets a part-time job in the archaeology lab at the Université de Paris,La Sorbonne.
1924-Still a graduate in France,Indy goes on a dig with Roland Walcott and other students(source:The World of Indiana Jones).
Spring 1925?Receives Ph.D. at the Université de Paris,La Sorbonne and lands a job at London University via M.Brody (1925 Feb-The Ultimate Guide).
Summer 1925-Heading to the job in the summer 1925(Dance of the Giants).
June 1925?Assistant Professor,Celtic Archaeology at the University of London.
1925-Indy eventually taught at Marshall College.
June 27,1925-Abner Ravenwood requested Indy's help on an expedition before Indy returned to his teaching obligations at Marshall College.
1925 to 1926-Was working in the field as an Archaeologist.
Spring 1927?Agrees to quit the University of London.
May 1927?Quits the University of London and returns to the University of Chicago.
June 1927?Denied Celtic Archaeology teaching position at the University of Chicago.
Fall 1927-Begins as Professor,Archaeology at a small New England college.
May 1928?Still teaching at the same college in New England.
May to June 1928-Indy spends the 1927-1928 school year teaching at the small New England college.
1928-Was working in the field as an Archaeologist.
1929-The Marshall College financed the Jastro-Expedition to Iceland and Indy got his first real job leading an excavation.He also met there Sophia Hapgood for the first time in the "coldest year of his life"(source:Fate of Atlantis computer game).
1930-Was working in the field as an Archaeologist.
January? 1930?Took a sabbatical from Princeton,teaching at the University of London.
February? 1930?First he completes some business at the University of London,then resumes his teaching job at Princeton,New Jersey.
1931 to 1933-Was working in the field as an Archaeologist.
1933-Taught again at Princeton University.
March 1933?Fired from Princeton for "grave robbing".
March 1933 to October 1933?Took a sabbatical.
October 1933-Taught in the Department of Art and Archaeology at Princeton University.
1933-Working in the field as an Archaeologist.
1933 to Early Winter of 1934(Hollow Earth) and on to 1935?Professor of Archaeology in the Department of Archaeology at Princeton University.
1935-Taught at Barnett College,New York.
1935-Was working in the field as an Archaeologist.
July 1935-Resigned from Princeton University.
July 1935-Taught at Marshall College,Bedford,Connecticut.
1935 to 1936-Was working in the field as an Archaeologist.
1936-Taught again at Marshall College.
1936 to 1937-Was working in the field as an Archaeologist.
1937-Indy gets a new job at Barnett College in New York,but loses the Archaeology 101 course to a Peruvian woman who studied at Harvard,Yale,and Sorbonne(source:The World of Indiana Jones).
Fall 1937-Taught at Barnett College.
January 1938 to February 1938-Taught again at Barnett College.
February 1938-Working in the field as an Archaeologist(Indiana Jones finally recovers the Cross of Coronado from the man who "aquired" it back in 1912).
March 1938-Taught again at Barnett College.
1938-Working in the field as an Archaeologist(Indiana Jones is contacted by a collector of antiquities,Walter Donovan).
1938 to Late 1939-Was working in the field as an Archaeologist.
December 1939-Joined World War II.
May 1939-Teaching at Barnett College when a mysterious stranger arrives with an ancient key and Indiana looks up a former colleague,Sophia Hapgood.
1939-Working in the field as an Archaeologist(Indy had a few adventures with the mobsters and Indy meets with some of the supposedly extinct Indians).
1939-Returns to teaching at Barnett College.
1939 to 1941-Was working in the field as an Archaeologist.
1942-Joined O.S.S. as part of World War II.
Summer 1943-Still working for the O.S.S.(source:Army of the Dead book).
1943 to 1945-Most likely spied on the Germans and the Japanese(source:Kingdom of the Crystal Skull-Indy mentions missions in Europe and the Pacific and he mentioned he was a double agent in Berlin,Germany).
1945 to Early 1947-Most likely spied on the Soviets(just prior to the O.S.S. becoming the C.I.A.)(Indy eventually gained the title of Colonel during his time with the O.S.S.-source:Kingdom of the Crystal Skull).
1947-Indy had no further ties to the O.S.S. or the C.I.A. in the post war period.He then went on a dig in Utah,for Barnett College.While on the dig,Sophia Hapgood,an officer for the C.I.A.,shows up(source:The Infernal Machine manual and the Infernal Machine first level dialogue).
Mid to Late 1947 to 1951-Was working in the field as an Archaeologist.
Sometime between 1951 and 1957-Indy left Barnett College,and returned to Marshall College in Bedford,Connecticut.

I apologize for any incorrect information.My sources are limited.I welcome any help.
Thank you everyone for your help.It is greatly appreciated.

Updated (1/16/14) be careful some of it may still be incorrect.
Note: when you see "Was working in the field as an archaeologist" that means he was looking for an artifact.

Colleges Indiana Jones Attended, Graduated from, and Taught at Timeline.

September 191? or April 1920-Attended the University of Chicago to study Archaeology (April 1920:With the horrors of war behind him, Indy returns to the United States to continue his studies, this time at the University of Chicago-according to The World of Indiana Jones).
June to July 1920-Indy leaves Chicago for a brief while during summer break (source:The World of Indiana Jones).
1922-Indy goes on an expedition with his classmate Magnus Völler and his professor Charles Kingston to excavate and explore some Maya temple in Panama (source:Staff of Kings computer game).
1922-Graduated from the University of Chicago (source:The World of Indiana Jones).
October 1922?Post graduate studies, Linguistics at the Université de Paris, La Sorbonne.
Late 1922 to Early 1923-Switches from Linguistics to Archaeology and gets a part-time job in the archaeology lab at the Université de Paris,La Sorbonne.
1924-Still a graduate in France, Indy goes on a dig with Roland Walcott and other students (source:The World of Indiana Jones).
Spring 1925?Receives Ph.D. at the Université de Paris, La Sorbonne and lands a job at London University via M.Brody (1925 Feb-The Ultimate Guide).
Summer 1925-Heading to the job in the summer 1925 (Dance of the Giants).
June 1925?Assistant Professor, Celtic Archaeology at the University of London.
1925-Indy eventually taught at Marshall College.
June 27,1925-Abner Ravenwood requested Indy's help on an expedition before Indy returned to his teaching obligations at Marshall College.
1925 to 1926-Was working in the field as an archaeologist.
Spring 1927?Agrees to quit the University of London.
May 1927?Quits the University of London and returns to the University of Chicago.
June 1927?Denied Celtic Archaeology teaching position at the University of Chicago.
Fall 1927-Begins as Professor, Archaeology at a small New England college.
May 1928?Still teaching at the same college in New England.
May to June 1928-Indy spends the 1927-1928 school year teaching at the small New England college.
1928-Was working in the field as an archaeologist.
1929-The Marshall College financed the Jastro-Expedition to Iceland and Indy got his first real job leading an excavation. He also met there Sophia Hapgood for the first time in the "coldest year of his life" (source:Fate of Atlantis computer game).
1930-Was working in the field as an archaeologist.
January? 1930?Took a sabbatical from Princeton, teaching at the University of London.
February? 1930?First he completes some business at the University of London,then resumes his teaching job at Princeton, New Jersey.
1931 to 1933-Was working in the field as an archaeologist.
1933-Taught again at Princeton University.
March 1933?Fired from Princeton for "grave robbing".
March 1933 to October 1933?Took a sabbatical.
October 1933-Taught in the Department of Art and Archaeology at Princeton University.
1933-Working in the field as an archaeologist.
1933 to Early Winter of 1934 (Hollow Earth) and on to 1935?Professor of Archaeology in the Department of Archaeology at Princeton University.
1935-Taught at Barnett College, New York.
1935-Was working in the field as an Archaeologist.
July 1935-Resigned from Princeton University.
July 1935-Taught at Marshall College, Bedford, Connecticut.
1935 to 1936-Was working in the field as an archaeologist.
1936-Taught again at Marshall College.
1936 to 1937-Was working in the field as an archaeologist.
1937-Indy gets a new job at Barnett College in New York, but loses the Archaeology 101 course to a Peruvian woman who studied at Harvard, Yale, and Sorbonne (source:The World of Indiana Jones).
Fall 1937-Taught at Barnett College.
January 1938 to February 1938-Taught again at Barnett College.
February 1938-Working in the field as an archaeologist (Indiana Jones finally recovers the Cross of Coronado from the man who "aquired" it back in 1912).
March 1938-Taught again at Barnett College.
1938-Working in the field as an archaeologist (Indiana Jones is contacted by a collector of antiquities, Walter Donovan).
1938 to Late 1939-Was working in the field as an archaeologist.
December 1939-Joined World War II.
May 1939-Teaching at Barnett College when a mysterious stranger arrives with an ancient key and Indiana looks up a former colleague, Sophia Hapgood.
1939-Working in the field as an archaeologist (Indy had a few adventures with the mobsters and Indy meets with some of the supposedly extinct Indians).
1939-Returns to teaching at Barnett College.
1939 to 1941-Was working in the field as an archaeologist.
? 1941 to August 1941-Was working in the field as an archaeologist (source:Indiana Jones and the Mystery of Mount Sinai).
1942-Joined O.S.S. as part of World War II.
Summer 1943-Still working for the O.S.S. (source:Army of the Dead book).
1943 to 1945-Most likely spied on the Germans and the Japanese (source:Kingdom of the Crystal Skull-Indy mentions missions in Europe and the Pacific and he mentioned he was a double agent in Berlin, Germany).
1945 to Early 1947-Most likely spied on the Soviets (just prior to the O.S.S. becoming the C.I.A.) (Indy eventually gained the title of Colonel during his time with the O.S.S.-source:Kingdom of the Crystal Skull).
1947-Indy had no further ties to the O.S.S. or the C.I.A. in the post war period. He then went on a dig in Utah,for Barnett College. While on the dig, Sophia Hapgood, an officer for the C.I.A., shows up (source:The Infernal Machine manual and the Infernal Machine first level dialogue).
Mid to Late 1947 to 1951-Was working in the field as an archaeologist.
Sometime between 1951 and 1957-Indy left Barnett College and returned to Marshall College in Bedford, Connecticut.

I apologize for any incorrect information. My sources are limited. I welcome any help.
Thank you everyone for your help. It is greatly appreciated.

Thanks for the update!

You're quite welcome.