Books by Calculator Machine Company?Click here for all books by Calculator Machine Company? available for purchase on-line. Early Computer (Mechanical Pocket Calculator), Circa 1923-1939: "World's Handiest Vest Pocket Adding Machine; Baby Calculator, Chicago, U.S.A., Trade Mark Reg. U.S. Pat. Off.; Addition, Substraction, Multiplication, Division" by Calculator Machine Company? listed for sale on Bibliophile Bookbase. Click here for full details and on-line purchase. Bibliophile Bookbase lists over 5 million books, maps and prints including libri antichi, first editions, collectables, out-of-print books and livres rares. Bibliophile Bookbase for antiquarian books, maps and prints. |