The Sanford L. Cluett Papers consists of notebooks and oversize certificates. The notebooks pertain to Cluett's days as an R.P.I. student as well as notebooks related to his professional career with the Walter A. Wood Mowing & Reaping MAchine Co. The oversize certificates include certificates of appreciation, and pieces relating to memberships (such as ASME) and the military.

The Teunis G. Bergen and Bergen family collection comprises the papers of Teunis G. Bergen (1806-1881), as well as the papers of other Bergen family and extended family members. Materials in the collection span the years 1639 to 1893, and primarily document Bergen's role as a major civic and community figure in Brooklyn, as well as his family's history. In addition to his work as a farmer and surveyor, Teunis G. Bergen served on the Kings County Board of Supervisors as Supervisor of New Utrecht, NY, and in 1864, he was elected to the United States House of Representatives as a Democrat to the Thirty-ninth Congress. He was also known for his expertise in genealogy and local history, and published several articles and books on these topics. Highlights of the collection include maps, surveys, and map tracings of various Brooklyn locales drafted by Bergen; extensive materials pertaining to Bergen's research and publishing on local history and genealogy; and research materials on Bergen family genealogy.