Designed to provide information for planning library services for the State's correctional system, the survey gathered information from a random inmate sample of 300 participants incarcerated in Maryland prisons. During a one-on-one personal interview, each inmate was asked a series of questions about his or her use of information sources. Findings indicated a lack of basic information concerning rules for correct institutional behavior, with one third of the sample indicating that materials on rules were outdated, unintelligible, and inapplicable. While almost all inmates knew of the library, classes, classification counselors, and social workers, many found it difficult to communicate with staff regarding these information sources, and tremendous delays were reported on information requests and institutional feedback. Such delays led to more confusion and less confidence in staff and officials. Although access to libraries and classes was greater than to counselors and social workers, the former were criticized for not fulfilling information needs: the library lacked updated legal materials, law books, and academic reference materials. A strong desire was expressed for information concerning family services, including better communication linkages with families, information on available family service supports, and on arranging for these services. Information, skills, and assistance with vocational planning and training was also desired. The questionnaire used for the survey and tabular data are included. (ERIC abstract modified)