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Here's a closer look at the excellent Houdini caricature by Mark Stutzman. Houdini gets a nice name check in the doc as well. It all shows up around 01:01:20.
This of course is a nod to the famous Houdini Estate where the escapist lived for several months in 1919 while making movies at the nearby Lasky studio, and where Bess Houdini lived from 1933-35. For more on Houdini in the canyon, check out the links below.