The Ward Thomas Collection is grouped into three series: Personal Papers, Office Records, and Project Records. The Personal Papers series includes materials from his time as a student at UC Berkeley, Thomas' architectural licenses, and his professional resume. The Office Records series includes a small amount of office administration, correspondence, job lists, and hand-drawn maps indicating the location of Thomas' projects in the Bay Area. The third series, Project Records, is the largest and includes working drawings for projects, presentation drawings, project files, and a small number of photographs