In 1942, Orson Welles was at the top of his game. As part of the efforts of the American government to win the support of Latin American countries during war times, Nelson Rockefeller asked Orson Welles to go to Brazil to shoot a documentary on the "culture" of this country. What both Rockefeller and Getulio Vargas (Brazil's president at that time) expected was some picturesque documentary on Rio de Janeiro Carnival. While he did shoot that, Orson Welles also went to the Northeast to tell the story of the daily life of fishermen there, an adventure that ended in tragedy. Getulio Vargas was not very happy with Welles portrayal of Brazil, and the studio behind the project, RKO, pulled the plug because of the increasing costs.
For years, the footage of Welles' Brazilian adventure was thought to be lost. It was found in 1985, in the archives of the studio. That gave place to a fascinating documentary, It's All True. It narrates the story of Orson Welles trip to Brazil and the disaster it became. It is also a great insight into the politics of the time, and Hollywood attitude towards Latin America. The last 45 minutes is a B&W silent documentary titled "Four Men on a Raft", the only part of Welles footage that was recovered almost intact. You get the sense that, if he had been allowed to complete the project, it would have been very different from other European and American directors incursions into Latin America (including Einsenstein and Mexico).