The fonds consists of the diaries of Harriet Pengelley (1835-1836), Robert Pengelley (1835), and A.E. Marguerite (Rita) Pengelley (1940-1941); correspondence; sketchbooks (1829-1830); drawings; and photographs. In 1994, an addition was made to the fonds which included a photocopy of a diary of Robert Pengelley (1837-1840) and textual records regarding the Pengelley family. In 2018, an addition of Pengelley family genealogical information was received.

This fonds includes correspondence, receipts and other records of Reverend Peter McLaren Duncan, Leonora Duncan, James Duncan, and Annie Duncan. Also included are sermon notes, assessment notices, insurance policies and the marriage register of Colborne Presbyterian Church from 1896 to 1912. The fonds also includes an autograph album of Leonora (Singleton) Duncan, Brighton, Canada West.