Collection of Lantern Slides from Houdini’s Spiritualism Lecture. New York: Standard Slide Corp., 1920s. Twenty-eight slides total, comprising 21 (of 50) slides from the original lecture series, and seven related slides (inclusive of one duplicate) added by a second contemporary source, possibly Frederick Eugene Powell or Oscar Teale. Original paper-covered boxes, two lacking tops. Old sequencing labels affixed at edges of slides, matching the ordering of Houdini’s handwritten key sheet (Library of Congress, Prints & Photographs Division, Lot 7426). 3 3/8 x 4”. Hairline or stress cracks to three slides, one just slightly affecting projected area. Slides from the original series comprising (sequencing numbers in brackets): Margaret Fox Kane ; Davenport Bros. ; Davenport Bros. and William Fay ; Davenport Bros. and Rev. Ferguson ; Cabinet of Davenports with Rev. Nichol and Fay ; John Henry Anderson ; Houdini and William Fay ; William H.H. Davenport’s Grave ; D.D. Home ; Houdini and Sir Dunkin ; Houdini and Harry Kellar ; Concealed man in Chiffonnier ; Lady Medium Switching Slates ; Kellar Trap Method ; Materialized Hand ; Chairs and Table ; Girl blowing current of air ; Houdini and Arthur Conan Doyle ; Houdini and Will Goldston ; Houdini and Conan Doyle ; Houdini and Theodore Roosevelt . The seven additional slides comprising: C. Alice & Leaping Fairy; The House at Hydesville [plus duplicate]; Margery with Houdini, Crandon, Bird and Munn; Margery with Houdini, Prince, Comstock, and Munn; Margery (alone); Houdini exposing spirit trickery to New York clergymen.