E. Barrett Prettyman, Jr. (1925-2016) was Katherine Anne Porter's lawyer and close friend from the mid-1960s until her death in 1980. He had a private practice in Washington, D.C. starting in 1955, and was a partner with the prominent firm of Hogan and Hartson since 1964. He is the author of Death and the Supreme Court. His papers include personal letters and business correspondence relating to Porter.
The first record of a meeting to discuss the formation of a Prince George's County Public Library System dates from 1945. This collection documents the planning and implementation of establishing the county library system, including correspondence to state legislators, as well as documentation of assistance from the League of Women Voters of Prince George's County. This collection is unprocessed, but an index to the microfilm is available as an external document.