This addition to the fonds consists of records created by Frank Morris. The fonds is arranged into the following series: correspondence, manuscripts and typescripts; postcards of the British Isles and Canada; photographs and negatives of botanical species from field trips; glass lantern slides of flowers, fine arts, museums, and scenes of Europe; and maps, mostly of Great Britain and Ontario.

Fonds consists of 7 watercolours done by Edward C. Caddy. Likely locale of some of the paintings was supplied by Professor Gordon Roper; these locations include Scotland (2), Gull Lake, Stoney Lake, Lake Superior. Two have no indication of location. Also included is a two section map showing Herriots Mill near Kitchiwannoe Lake, and a map (mockup) of Peterborough, Ontario entitled "Location of Built Heritage (demolished and standing) in relation to the MNR building site", 1995.

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 involvement in environmental and naturalist issues and activities; correspondence relating to Teacher's College and several issues of the Young Naturalist. Fonds is arranged into 6 series:

• Frank Morris: published and unpublished articles, reviews, etc.
• Douglas Sadler: published and unpublished articles, manuscripts, reviews, research material, etc.
• Naturalist/environmental involvements with business organizations, government, etc.
• The Young Naturalist
• Correspondence
• Personal materials

This addition to the fonds consists of newspaper clippings, correspondence, photographs, music books, notes and memorabilia concerning various parts of Peterborough County.