The Humanitarian Work series documents Pate's involvement with several relief organizations, including the American Red Cross Prisoner of War Relief, Commission for Relief in Belgium (CRB), Herbert Hoover World Food Survey Mission, American Relief Administration in Poland (ARA), Commission for Polish Relief (CPR), and UNICEF. The papers include correspondence, reports, Pate's notes and writings, publications, and photographs. The series also includes a small amount of material documenting Pate's years as a businessman in Poland.

The Oversized Materials series is largely composed of scrapbooks documenting Pate's humanitarian work, including in Poland and with the Red Cross during World War II, the Hoover Food Survey Mission, and UNICEF. The series also includes memorabilia from Pate's work with the Commission for Relief in Belgium, awards certificates, and a panoramic photograph of the Class of 1915 twentieth reunion.