The series consists of files about buildings the firm built or altered in Vancouver, elsewhere in British Columbia, and outside the province. Some of the files deal with contracts that the firm did not win. The records include original architectural drawings; photographs; and related correspondence, reports, journals, minutes of committee meetings, forms of tender, quotations, agreements, specifications, certificates of insurance, and hardware schedules. The records are arranged into sub-series based on the project files and grouped under subject headings chosen by the architectural firm: Communication, Transportation & Public Utilities; Religious and Funerary; Exhibitions & Spectacles; Residences; Professional; Mercantile; Social & Recreational; Schools; Administrative & Financial; Universities - Canada (excepting the University of British Columbia); Community & Regional; Hotels & Cafes; Government; Industrial. This original order of categorization has been maintained. Some files on projects can be found under two categories, particularly Social & Recreational and Community & Regional. The projects are arranged alphabetically and then in chronological order within these subject headings. For some projects, Thompson, Berwick and Pratt created a publicity file, which has been put at the beginning of the files on the particular projects.