Many library operations involving large data banks lend themselves readily to computer operation. In setting up library computer programs, in changing or expanding programs, cost in programming and time delays could be substantially reduced if the programmers had access to library computer programs being used by other libraries, providing similar library services. Programs should be available by purchase, exchange or some other basis so that librarians and computer programmers are not continually reinventing the wheel. This survey was undertaken in order to learn which libraries have computer programs in operation, type of function computerized, programming language, size of library collection, and whether programs would be made available to other libraries. Approximately 1,000 questionnaires were mailed in 1971-72 to a selected list of libraries in the United States. Approximately 250 questionnaires were returned. Sixty-six libraries had computer programs which were operational. These programs are reported upon in this document. (Author/SJ)