Textbooks and publications by David M.Greene (Director of R.P.I. 1878-1891) regarding steam engines, canals, and railroad engineering, 1872-1889; diaries, 1883-1885 and 1889; miscellaneous letters, 1885-1889; RPI progress report, 1891; and tributes to Greene, circa 1905.

The Horsford Family Papers comprises a collection of papers created by various members of the Horsford, Gardiner, and L’Hommedieu families.

The collection contains family letters, legal documents (personal, professional, and business), primarily written by residents of New York State and miscellany; photographs of nineteenth-century portraits from the album of Elizabeth Van Rensselaer; black and white photographs taken in the mid-1950s and 1960s of Van Rensselaer family member portraits and homes; newspapers with articles relating to the Van Rensselaer family.

Reports produced by John V.W. Reynders as a consultant to steel and a photo documentation of the construction of the Bear Mountain Bridge make up this collection of professional papers.

This collection consists of journals and correspondence regarding Davis' work for the Department of Public Works in Peru, 1861-1865.

The Hoffman papers consists of agendas, minutes, reports, correspondence, flyers, and ephemera from Hoffman's undergraduate years at R.P.I. The bulk of the material, 1969-1973 emphasizes an intense period of campus activity and change at Rensselaer regarding political issues on campus and nationally.

The Roebling Collection documents the personal and professional activities of John A. Roebling and Washington A. Roebling; and business activities of the John A. Roebling’s Sons Company.  The material dates from 1824 to 1926 with the bulk of the material dating from 1844 to 1883.

The Skilton Family Papers are comprised of the papers of James, Julius and George Skilton, three brothers, natives of Troy and graduates of Rensselaer Polytechnic Institute. The collection focuses mainly on their professional careers with a focus on international affairs, legal issues, engineering discussions, and personal and family matters.