Fonds consists of textual records in the following series: Mossom and Boyd & Co. concerning primarily lumbering operations, Farming operations, Associated companies, Canada Land and Immigration Company, Boyd Family papers, Operations in British Columbia-Cowichan Lumber Company, Operations in Northwest Territories, Operations in Quebec, Lindsay Bobcaygeon and Pontypool Railway, Trent Valley Navigation Company.
Fonds also contains photographs, postcards and stereoviews. Four stereoviews, ca. 1870-ca. 1889, depict Niagara Falls, Ontario; Quebec City, Quebec; Chaudiere Falls, Ottawa, Ontario. Copies of 24 photographs, 1888-1889, depict the Boyd family and enterprises, Peterborough and Bobcaygeon, Ontario. One photograph, ca. 1990, depicts a mill, probably belonging to the Boyd family, Geneva Bay, Vancouver Island, B.C., photograph by Edwards Bros., Vancouver. Copy of one photograph, ca. 1900, depicts the SS Calumet at Fenelon Dock. 27 photographs, ca. 1900-ca. 1910, depict the Ontario towns of Bobcaygeon, Buckhorn, Cameron Lake, Coboconk, Fenelon Falls, Kawartha Lakes, Lakeside, Sturgeon Point; lumbering activities of Mossom Boyd & Co., around Coboconk, Cameron Lake, Bobcaygeon; activities of S.S. Alert, Ajax, Empire, Esturion, Ogemah and Stoney Lake of the Trent Valley Navigation Co. Ltd.. Four photographs, ca. 1900-ca. 1910, depict Boycaygeon River and Lime Kiln; Fenelon Falls and Municipal Power House; buildings and lock portage, Bobcaygeon, Ontario; possibly Tom Van Norman in his canoe with his dogs, Bobcaygeon area, Ontario. Copies of two postcards and 17 photographs, ca. 1904, depict bodies of water, steamboats, and other scenes in Haliburton, Victoria and Peterborough counties, Ont.: Noghi Creek, "High Falls", Little Bob River, Chemong Lake, Burnt River, and the Trent Canal; SS Stoney Lake, Bessie Butler, Ogemah, Esturion; Bobcaygeon, Haliburton, Fenelon Falls and Peterborough, Ontario; lumbering operations. 50 photographs, 1910-1925, that are unidentified views. Three photographs, 1916, depict the Inspection by King George V of the Canadian Field Artillery, July 1, 1916; Lieutenant Colonel Charles Leslie. Copies of 89 photographs, n.d., depict lumbering activities in the Bobcaygeon, Ontario area; steamer navigation in the Trent Valley, Ontario. 369 photographs, 105 stereoviews and 75 postcards, n.d., are views of Great Britain, the United States, and Canada; farm animals; lumbering.
Fonds also contains maps and architectural drawings. 136 maps, 1871-1917, depict Canada and the United states and various parts thereof. One technical drawing, ca. 1884, is a plan of the Paloma, a lake scow built by Mossom Boyd and Company and the Trent Valley Navigation Company. Three technical drawings, 1900, are plans for the steamboat Rideau Queen.