File includes a broadside advertising the auction sale of Northcote Farm on Lake Katchewanooka, property of Dr. Campbell Mellis Douglas. Most of Northcote Farm became part of Lakefield College School in 2007; a small part of Northcote is retained by the Gastle family. Also included are two small hand-drawn maps by George Douglas of Northcoate Farm, ca. 1909.
Additional items were added in 2020
- Chart: Department of Railways & Canals Canada, Trent Canal Chart No. 13, Lakefield to Young's Point, 1923
 - Map: hand-drawn by George Douglas of waterway from Lakefield to Young's Point, n.d.
 - Map: Lake Simcoe, Ontario, Department of National Defence,1940 (partial map only)
 - Map, 1984 reproduction of 1784 Canada, including that part later named Ontario Exhibiting the adjacent countries and Indian - Nations
 - Postcard: Little Lake, Peterboro, n.d.