Here is what appears to be the complete footage of a Houdini overboard box escape. This runs 2 minutes longer than the restoration I attempted back in 2011. This also confirms the identifies of the other magicians seen in the video. Enjoy.
What this footage doesn't do is offer any clue as to where and when this escape took place. But we can see doughboys in the crowd, which suggests this is during the war years. You'll notice Houdini is making a speech before being closed in the crate. Any lip readers among us?
This remains the only known footage of this iconic Houdini escape.
Thanks to escape artist Rick Maisel for allowing me to share this rare footage. A playlist of these clips can be found on the WILD ABOUT HARRY YouTube Channel.
UPDATE: I've now identified when and where this escape took place. Read: Houdini's overboard box footage identified at last!