The Colby Poster Printing Company, a Los Angeles-based print shop that thrived from 1948 until 2012, produced posters both commercially for local events, concerts, fairs, little league teams, local political candidates, etc. and later collaborated with artists and poets including Simon Johnston, Ed Ruscha, Eve Fowler and Allan Ruppersberg. Noted for their (often) fluorescent colors printed split fountain-style with simple black lettring, their presence in Southern California was ubiquitous, found anywhere a utility pole was at hand. The HMCT collection is courtesy of generous donations from Simon Johnston, the estate of Clive Piercy, and the Los Angeles Library.

Unless otherwise noted: the artists/designers are unknown; posters are letterpress on board.