We are very familiar with the above Prison Cell and Barrel Mystery Poster, which can be found in many Houdini books.
Both posts included the above photo of a Houdini theater display in Salem, Massachusetts, and commented about the poster on the right behind the packing crate possibly being a second Prison Cell and Barrel Mystery poster. Well, I knew I had seen a frontal image of that poster in a photograph when I visited Fred Pittella’s Houdini & Escapes museum during my special visit to NY in 2015. And that is absolutely a second Prison Cell and Barrel Mystery Poster. Below are two images I took during my visit that Fred has given permission to share.
Special Thanks to Fred Pittella