A comprehensive survey was conducted to (1) determine the present state and future needs of Oklahoma libraries, with emphasis on public libraries, and (2) formulate a plan for library development. A survey team collected basic data on the state's libraries, conducted an in-depth survey of representative public libraries, examined library resources, analyzed the state economy in relation to public libraries, determined current and projected needs for adequate library service, and formulated recommendations. Survey methods included interviews, analysis of printed data, and an examination of multi-county and single library units. It was concluded that public and school libraries and the State Library need much development, while college and university libraries seem to be improving and special libraries are good. The over-all library plan suggested involves: neighborhood libraries, bookmobile service, cooperation between school and neighborhood libraries, library systems, upgrading school libraries, strengthening the State Library, making resources of college and university libraries available to all libraries, connecting headquarters libraries to the State Library by a teletype system, a facsimile reproduction system to link the State Library and university libraries, and state aid to libraries. Specific recommendations are made for all types of libraries as well as library education in Oklahoma. (JB)