UPDATE: Unfortunately, this video appears to have been made private.
Another thing that excites me about this video is I actually did not know about Houdini's 1923 Memphis engagement, nor his suspended straitjacket escape! (I only knew about his 1899 appearance.) Ashley tells me her primary source was this 2014 article in The Commercial Appeal. I'm currently looking for confirmation--preferably an article from the time--but have so far come up short.
If anyone has or can find any accounts of Houdini in Memphis in September 1923, Ashley and I would love to see it!