Fonds consists of correspondence, photographs, scrapbooks, greeting cards, diplomas, certificates, maps, pamphlets, reminiscences, genealogical materials, and memorabilia pertaining to the Allen and Bellamy families.

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.