This first compilation of statistics for special libraries serving state government agencies is based on data supplied by 1,134 comprehensive reference, law and legislative, and technical and specialized libraries in response to a mail questionnaire. Twenty-one tables display data on library materials, staff, finances, and services. Analysis of the data reveals that these libraries hold 19 million books, 3.3 million periodical volumes, 8 million government documents, and 9 million microforms; employ 4,471 persons, 46 percent of whom are professionals; expend $87 million, of which 45 percent is for salaries, 17 percent for library materials, and 35 percent for all other; and loan 9 million items per year, answer 9 million queries, and are net lenders at a 3:1 ratio. The basic tables referred to in the text are listed with information for ordering, but are not included. The survey questionnaire is appended. (RAA)