Fonds consists of material relating to the research and initiatives the Trent-Fleming Trail Studies Unit engaged in. Files include correspondence, reports, research material, pamphlets, brochures, conference materials, and other materials. Photographs document the Northumberland Forest trails. CD-ROMS documents project reports. VHS tape documents the television coverage of the Rails to Greenways Conference (1993). Fonds is arranged into 5 series: Unit operations; Communications; Correspondence; Conferences, presentations and committees; and Projects and research.

Fonds is comprised of records created by or collected by Stephen Ogden documenting the Tiny Township Stop Dump Site 41 campaign. Dating 1979 through 2016, it represents a significant episode in Canadian environment activism and is comprehensive in scope. Among the materials included are: notes for speeches; transcriptions of government environmental assessments and WYE Citizens Group meetings; WYE Citizens Group press releases; maps and records of water well locations near Site 41; hydrological and geotechnical records pertaining to the watershed characteristics of the Site 41 area; MOE correspondence and statements relating to proposed dump site management, waste management and related technological considerations; Simcoe County “Corporate Services” records including meeting minutes and agendas, notifications, memorandum, notes, correspondence and emails, and media clippings; court proceedings and legal documents obtained through Freedom of Information requests made by Stephen Ogden; photographs, dossiers for exhibits; audio-visual materials including cassette tapes, VHS tapes, CDs and DVDs.

Collection consists of meeting minutes, statements and briefs, newsletter issues, newspaper clippings, photographs, and correspondence relating to efforts of the Save Maple Mountain Committee. Trent University people associated with this effort included Professor F.M. Helleiner, Professor Bruce Hodgins, and Jamie Benedickson.

Collection consists of 103 slides of various nature areas on the Symons Campus, Trent University, taken October 1996 as a record of the vegetation in 1996 for future comparison of vegetation change. The slides are accompanied by an index.

Fonds consists of material relating to the administration and programming of the INSTRUCT Programme. Files includes reports, journal articles, event flyers, pamphlets, correspondence, newsletters, budget reports, research material, and other documentation detailing the Programme in both English and Spanish. Photographs and slides include images of meetings, travel, seminars and work done with local communities in Ecuador and Mexico and at Trent University. VHS tapes includes a recording of the “Questioning” Conference panel, the conservation of the Imbkucha and Lago san Pablo watershed, and on the festival of Inti Raymi. CD-ROMs include photos of an INSTRUCT workshop on women and environment and another on local traditions.

This addition to the fonds consists of articles and booklets written by Frank Morris; manuscripts and published articles by Douglas Sadler; correspondence, minutes of meetings relating to Sadler's involvment in environmental and naturalist issues and activities; correspondence relating to Teacher's College and several issues of the Young Naturalist.