As part of the American Experience film on General MacArthur, this article explains the plight of the World War I veterans who marched on Washington in 1932 to claim their war bonus--which they needed due to the Great Depression--only to be routed out of the city by the U.S. Army at the command of President Hoover.

This site from ibiblio.org gives extensive biographical information on Herbert Hoover based on the collection in the Herbert Hoover Museum.