Personal and professional correspondence, a geological notebook, and miscellany pertaining to Amos Eaton and members of his family.

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 Marcus L. Filley Papers comprise business correspondence related to the sale of stoves manufactured by the Filley foundry in Green Island, NY. Some family papers, diaries and photographs are also included in this collection.

This collection consists mainly of eight scrapbooks, sketchbooks and journals kept during the course of Babcock's life from school days to the latter part of his career. The scrapbooks contain a variety of items: obituaries, math notes, short stories, expense accounts, Babcock's artist talents, report cards, clippings of love and romance and photographs of his time at work in Chester, P.A.