The bulk of the collection consists of diaries, correspondence, memoranda, notes, clippings, scrapbooks which pertains to Albert Riedel's trip to Singapore trip the work he did as a representative of the International Eexecutive Service Corps. Riedel's papers also contain personal correspondence (1967-1974) with Foo Chee Chin of Singapore and a scrapbook of some of Riedel's speeches (1925-1960). There is also a photo album of his 1953 trip on the Rhine River.

The collection consists of newspaper clippings, annual reports, directories, publications, newsletters and brochures.