Reference book for Multilith duplicator model 750, circa 1954.

The Multilith was a printing process that required either chemically fixing the copy on a metal sheet or preparing a paperlike master copy by typing, printing, or drawing.

The machine was used primarily by small businesses. The Multilith operated on the same principle as lithography, but through the use of paper placed on a cylinder and run off.

Lithography is a printing process in which the image to be printed is rendered on a flat surface, as on sheet zinc or aluminum, and treated to retain ink while the nonimage areas are treated to repel ink.

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