[DELAND]. Printing Blocks for Magicians' Playing Cards and Throw-Out Cards. Circa 1910s. Two engraved copper blocks for playing card back designs, including the DeLand optical illusion back with SAM logos; a ?Roterberg" back design block; and four other unmounted copper plates for the Daisy Deck and other back designs. With a sample card for the Grand Rapids Magicians' Club Ladies Night incorporating the Roterberg back, and a DeLand Card Locator.