The whole article, from this very dubious source, rests on a series of FBI reports and compilations which I've read personally. It's a great primary source to read if you're bored one day, due to the fact that it's highly amusing. The report, which follows the suspicion that Hitler might have escaped since the western allies (i.e. United States, Britain, France, etc. excluding the Soviet Union) could not find any direct evidence pointing to this, is essentially an investigation into the rumours surrounding Adolf Hitler after his suicide. Much of the compilation consists of dubious claims by people who claim to have seen Hitler after the war.

Some highlights from the reports sent to the FBI:

• Hitler is located in a ranch in Argentina which he reached by submarine two weeks after the fall of Berlin.

• Hitler is located in an underground complex beneath a ranch in Argentina.

• Hitler is in German Switzerland because he couldn't be bothered to learn a foreign language.

• A Mrs. Jones claims she saw a man who looked suspiciously like Adolf Hitler in Charlottesville, Virginia.

• A Mr. Walter Winchell shares a table with a man who he claims looks exactly like Adolf Hitler in New York City.

• Hitler is being treated by a Spanish doctor in Spain.

• A man who works as a ship guard claims that Hitler is currently working as a butler for a certain De Valeria.

• Hitler and Eva Braun was seen sitting in a small gathering of Germans in the town of Casino, Brazil outside of Rio de Janeiro.

• Hitler bought a farm in North Carolina.

• Hitler is hiding in the mountainous area around Schwindigg, Germany.

• Hitler was on a train to Chicago from New Orleans.

• Hitler stayed at Hotel Chicoutimi, Chicoutimi, Quebec.

• Hitler is in Bogotá, Colombia.

• Hitler is staying at the rooming house of an old lady in Washington D.C.

• Adolf Hitler is in St. Louis, Missouri.

... And that's just the first compilation! There are a total of four which can all be found right here.