The series consists predominantly of postcards and greeting cards, with one file of letters to the editor by Roy Thomas. Some items are restricted due to the presence of personal information.

The series consists of agreements, mortgage and construction records, some government correspondence including water rights, crown grants, maps and plans, wills, probates, and powers of attorney.

The series consists of Journals and personal writings based on practical, historical, and political concerns.

The series consists of trade licenses, and records military service for Roy Thomas.

The series consists of distance learning and homeschooling records, assignments, exams, correspondence.

The series consists of slide transparencies from ca. 1930 through 1992, depicting Princeton and environs, including Allenby, Ashnola, Tulameen, Hedley, and Coquihalla. Some depictions of mines, or the areas of mining activities, including Nickel Plate, Coalmont, and Brenda. Featuring predominant coverage of the outdoors, the series includes photographs of many area mountains, creeks, and lakes. Scenes of recreation, including fairs, parades, and rodeos are also available. These slides are mainly attributed to Roy Thomas.

Prints feature photographs of members of the Allison family, with item-level descriptions under development.

The series consists of death certificates for Alfred Thomas and Clover Thomas, handwritten Allison cemetery map, and some funeral ephemera.

The series consists of bank books, accounts paid, and ledger records.

The series consists of newspaper clippings, annotated historical publications, Social Credit scrapbook.