Results from one of a series of cooperative projects to study public access to online catalogs are discussed. This report focuses on a survey of 1,152 users and 1,315 non-users of six computer systems at seven libraries, with library participants including (1) Claremont Colleges Library, which uses the Claremont Total Library System; (2) the Evanston Public Library, which uses the CL Systems, Inc., LIBS 100 touch screen terminal public access catalog; (3) the Minnesota State University online union catalog developed at Mankato State University; (4) Pikes Peak Regional Library, which uses an in-house developed computer system called Maggie's Place; (5) Steven F. Austin State University, which uses a DataPhase Systems, Inc., turnkey circulation system; and (6) the West Valley Joint Community College District whose two community college campuses share a Universal Library Systems (ULISYS) turnkey circulation system. Recommendations to improve the online catalog, specifically in the area of user-computer interface, are presented. Twenty-seven references are included and 37 exhibits display study-related information. (Author/LMM)