Fonds consists of meeting minutes, correspondence, reports, meeting notices and agendas, copies of agreements, newsletters, newspaper clippings and printed materials about issues and activities the Association was involved in and its administration. The records are arranged in seven series: Executive Meetings and Related Materials; Correspondence and Related Materials; Annual General Meetings; Extraordinary General Meetings; Newsletters and Related Materials; External Organizations; Subject Files.

The fonds consists of textual materials focusing on Leonard Marsh's professional research and personal interests and includes correspondence, reports, notes, published materials and clippings, diaries, scrapbooks, and index cards. It is organized in the following series: Education, Music, Personal Papers, Search for Sanity, Social Prophecy, Social Security, Social Work, United Nations, Urban Planning, Miscellaneous, and Scrapbooks.