The magician's own book, or The whole art of conjuring (1862)
Arnold, George, 1834-1865, Cahill, Frank · New York, Dick & Fitzgerald · leaf 57
a circular trap-door—and for this there is full provision inthe cover of the table extending to the floor—a confederatemay readily substitute one for the other.
Magic tricks
Internet Archive · University of Pittsburgh Library · Public Domain Mark 1.0. Free to use for anything.
