The Succsession of Heroes
I personally find this film very interesting as it seems to be the spiritual father of the Indy series in my point of view the sucsession of the heroes went like this:
1880 - 1920: The grand British imperial hero (Yes i know my american friends about Western heroes but these are not really in the tradition of the globe trotting hero) examples of these heroes can be seen in characters such as Sherlock Holmes and other such tales where duty, loyalty and comradeship were valued.
This is represented in contempory times as the film League of Extraordinary Gentlemen
1920 - 1939: The Era of the Pulp Hero, these are very much in the tradition of the idealised hero but made more human. Indy belongs to this particular genre.
1939 - 1959: The era of the great redblooded hero
1960 - 1989: The Era of the Cold War hero, a middleground between the duty bound hero and the cynical pulp hero.
This is represeted now by James Bond