Consists of a memoir written by Horace Hunter "Holly" Parsons, an aerial timber sketcher whose career spanned over 50 years. This memoir contains information about the contracts he fulfilled for the Ontario Ministry of Natural Resources, formerly the Department of Forests and Lands, and various logging, pulp, and paper corporations. Some contracts also involved mapping out the borders of areas where forest fires had occurred. These contracts spanned across Ontario and parts of Quebec, with a focus on the areas surrounding the District of Thunder Bay. Included in the memoir are personal anecdotes, descriptions of his trips, crew members he worked with over the years, and photographs taken by or given to "Holly" Parsons.

Dates of the memoir and accompanying photographs range 1922-1976.

Horace Hunter "Holly" Parsons (1902-1990) was born in Owen Sound, Ontario and lived in Etobicoke, Ontario. He graduated from the University of Toronto in 1925 with a Bachelor of Science in Forestry.

The fonds consists of a photograph album assembled by Arthur Malcolm Mushlian, featuring his own photography, primarily of the 1920s and 1930s. The photographs depict a wide variety of subjects and locations, but with a particular focus on aviation and mine development in Northwestern Ontario.

Arthur Malcolm Mushlian (1902-1961) was born in England, and married Mary Ruby Austen on 22 December 1924, in Kenora, Ontario. He would later serve with the Royal Canadian Navy Volunteer Reserve during the Second World War.