The papers of Senator John J. Williams span the dates 1946-1988, with the bulk of the collection representing the years of his career in the U.S. Senate, 1947-1970.

The collection consists of nearly 150 linear feet of papers and also includes scrapbooks, books, photographs, and film and sound recordings. For the most part, the arrangement of the collection reflects the original filing series of Senator Williams's office. The collection is divided into 25 series which are organized under four record subgroups. The first three subgroups--Legislative Staff/Office Files, Constituent Correspondence and Cases, and Administrative and Personal Office Files--consist of series that document the work performed in office by Senator Williams and his staff. The subgroups reflect the functions of the Senator's work and include series typical of a congressional collection.