This collection contains clippings, programs from Colvin's service with the Groton-New London Bridge Commission, scrapbook entries and correspondence from the Connecticut Power Companyand miscellaneous certificates.

Correspondence, a diploma, one small scrapbook, and a few publications by Benjamin Franklin Greene.

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

The collection contains personal and professional papers, scrapbooks and a photo album primarily related to O. F. Nichols' work on the Williamsburg and Manhattan Bridges and for the Brooklyn Elevated Railroad Company.

This collection consists of personal and business papers and memorabilia beginning with a scrapbook created by Philip Walter Henry during his days as a student at R.P.I. through his career as a civil engineer.

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.

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.