Having discovered a way to combine Quicktime movies for my 13 second Grim Game assemblage, I've now gathered together several trims of what is Houdini's only filmed overboard box escape (to my knowledge) to give us the full event in 01:37. These clips come from The Learning Channel's 1999 documentary, The Greatest, the 1971 BBC documentary, The Truth About Houdini, and The Houdini Code (2008).
Enjoy the show.
UPDATE: I'm now thinking this might be Houdini's overboard box escape at Sandy Hook, NJ, in 1914. Houdini had performed the overboard box at Battery Park on July 15, 1914, and Kellock reports that he repeated the feat at Sandy Hook "shortly after." A clue to the time might be the American flag Houdini is flying from one of the air holes of the crate. The outbreak of World War I occurred on July 28, 1914.
UPDATE: Another possibility. Could this be the overboard box escape at the Pan-Pacific Exposition in San Francisco on November 6, 1915? Newspapers reported that the escape was filmed. 100 years ago: Houdini in the drink and at the clink.