This ad for a Rand Card Record Machine comes from the May 18, 1918 issue of Literary Digest.
Every Card Record At a Glance -- Not Buried!
Let's assume you need instant information on a customer at Lincoln, Neb. A touch -- the L's swing into view -- and immediately the eye sights Lincoln. To read or make entry, simply shift card upward -- unnecessary to handle or remove. It's a quick, one-hand operation with the RAND Card Record Machine.