[HOUDINI, Harry]. [SOCIETY OF AMERICAN MAGICIANS]. Group of Harry Houdini Ephemera. 1910s-70s. Including two loose 4to sheets of unused letterhead from the Society of American Magicians (listing Houdini as President of the organization); two FDCs memorializing Houdini; a sheet with 15 commemorative stamps showing Houdini produced in 1951 for the IBM-SAM Combined Convention of magic in New York, together with an official letter from Edward W. Dart promoting the stamps and convention; Houdini Picture Corporation reproduction stock certification declaring Elva A. Steffy the owner of five shares. – and issue of The Sphinx Vol. XXV N9 (Houdini cover). The largest 11 x 8 1/2”. Condition generally good; typed letter missing bottom right corner. Provenance: Ken Klosterman's Salon de Magie.