While re-reading the superb book, The Houdini-Price Correspondance by Gabriel Citron, I stumbled on a nice little morsel of Houdiniana. In a letter Houdini writes to Price on December 26, 1924, he gives out this piece of personal information:
P.S. My private telephone number is Monument 8260.
So there you go. Houdini's phone number! Add that to your quiver of Houdini trivia questions.