Block Vanish. New York: Charles Larson, ca. 1940. Two of four colored block vanish (or are produced) in a small cabinet with four doors. 11? wide. Scarce. Larson owned one of the largest and historically significant collections of magic apparatus, and prized himself on knowing the methods behind virtually every trick he was shown. He had this and one other block trick devised based on his own ideas and presented it at various lectures he attended. The tricks were never commercially marketed, and few have survived.