Turns out this was a one-shot performance in answer to a challenge (of sorts). This is when Hardeen was appearing at the Prospect Theater in Brooklyn during the week of April, 21, 1929.
This month I'm offering all patrons a free PDF of The Houdini Birth Research Committee's Report. In 1972 the S.A.M. decided to officially settle the matter of Houdini's birth place with an investigation.