libraries' share of general revenue sharing funds. Statistical tables showing federal Commission on Libraries and Information Science. The status of federal categorical and non-categorical aid to libraries is described, along with formulation methods for federal library policies and the present government climate for library planning. The evolution of federal categorical aid programs since 1956 is recapitulated, and the results are analyzed for school library materials (Elementary and Secondary Education Act Title II), public library services (Library Services and Construction Act Title I), public library construction (LSCA Title II), academic library construction (Higher Education Facilities Act), and college library materials (Higher Education Act Title IIA). There is also a preliminary report for fiscal year 1973-74 on libarries' share of general revenue sharing funds. Statistical tables showing federal budget figures for the various categorical aid programs are appended. (LS)