Series consists of materials that document Marsh's interest in educational issues, including community colleges, society and education, his concept of a "social planetarium," UBC International House, and education at an international level. Materials include publications, notes, correspondence, clippings, reference materials, memorandums and periodicals.

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.

Series consists of unsorted materials relating to most of Marsh’s interests and activities and includes correspondence, publications, articles, reports, notes, and index cards.

Series consists of materials that document Marsh's interest in music and consists of clippings, correspondence, notes and manuscript notes. These materials focus on musicians, musical organizations, and the study of music. Also included are manuscript notes for his book At Home with Music and a copy of the publication.

Series consists of materials that document Marsh's personal life and his interest and involvement in the peace movement, Canadian politics, and international affairs. Materials include notes, clippings and published materials, diaries, correspondence and a sound recording of an interview between Leonard Marsh and Dennis Magill.

Series consists of materials collected and assembled by Marsh, which document his interests mainly regarding travel and social issues and music. Materials include clippings, and written notes, made in scrapbooks.

Series consists of materials for a book project entitled "Search for Sanity: the educational imperatives of our crisis-ridden world." Materials include manuscript notes and drafts of chapters (both hand-written and typed), including a detailed chapter outline. Chapter 15, "Can the Social Sciences Help," was eventually published as a booklet by Marsh.

Series consists of materials for a book project entitled "Social Prophecy: hopes and dooms." Materials include clippings and manuscript notes, organized by chapter or subject area.

Series consists of materials dealing with social security (in Canada and elsewhere) and unemployment. Includes an extract of a statement to the Senate, clippings, notes, and surveys.

Series consists of materials related to social welfare, social changes, the status of women, and health services and includes lecture notes, articles, clippings, photographs and correspondence.

Series consists of materials documenting Marsh's interest in the United Nations and its agencies and materials related to his work for the Vancouver "Habitat" conference in 1976 and includes clippings, conference proceedings, correspondence, and notes.

Series consists of materials related to the sociology of planning, the problems of urbanization, and housing policies, both in Vancouver and abroad, and includes clippings, correspondence, notes, articles, pamphlets, surveys, tables, and charts.