The series consists of videotaped oral history interviews with Coquitlam residents, filmed at Mackin House with a grant from the Government of Canada New Horizons for Seniors Program.

The collection consists of material accumulated by the Coquitlam Heritage Society over the course of its existence. The collection includes the following: records related to Fraser Mills (later the Canadian Western Lumber Company, then Crown Zellerbach) including ledger books, journals, statements, photographs, and various other records; records related to the lumber industry in Coquitlam; photographs of historic Coquitlam; glass plate negatives by W.J. Moore and Richard Broadridge; material related to the administration of the Coquitlam Heritage Society itself; and miscellaneous records related to Coquitlam's history

The series consists of administrative records including minutes relating to the Coquitlam Heritage Society as well as minutes, reports, and correspondence relating to the development and renovations of Mackin House and Heritage Square. The series also includes plans for the restoration of Mackin House from 1993.