by Burroughs Adding Machine Ltd
Burroughs Adding Machine Company.] Burroughs Adding Machine Ltd. Burroughs latest . . . the Burrometer. N.p., n.d. Unbound postcard. Illustrated. 152 x 102 mm. Postcard advertising the Burrometer, a key-driven calculator described as "the fastest calculating machine in the world." Origins of Cyberspace 241. . (Inventory #: 44657)