Consists of data, notes, graphs, photographs, and inventories related to the experiments of Walker Bleakney.

Photos of countries, people, subjects gathered for book use (such as Album of American History), and of company staff, offices, buildings, and selected authors

Consists of the letters of individuals such as George Pierce Baker, Benjamin Harris Brewster, Andrew Carnegie, Samuel Langhorne Clemens, and Theodore Roosevelt, as well as others.

The Audiovisual series consists of videotapes and sound recordings documenting Baker's career in government and politics. The majority of tapes in the series are VHS videotapes of Baker's appearances on television news programs or recordings of television news stories that include mention of Baker. Some recordings of speeches and public appearances are also available. The videocassettes created between 1988 and 1992, during Baker's years at the State Department, often contain multiple programs or events on a single tape. In addition to the contents list, a more detailed index to the State Department "Master Tapes" is available in Box 262.

This series consists of a variety of materials of family members not represented elsewhere in the collection. Included are diaries, correspondence, documents, photographs, including photographs of White, Poole, Morris, and other related families, genealogical papers, various ephemera, and printed matter. Among the miscellaneous family material can be found papers of the Delafield Family Association, a review of John Ross Delafield's Delafied: The Family History (1945), book plates, information about the "triple funeral" of Joseph, Henry, and Edward Delafield, correspondence concerning the Delafield family in the U.S. Army, a pamphlet by John Ross Delafield about the family vault in Green-Wood Cemetery, Brooklyn, New York, photocopies of several pages of genealogy in the oldest known family Bible (1713), as well as other general material, and printed matter.