Composite photographs of RPI's Zeta Psi fraternity. Four photos are approximately 23 x 18", and the other two measure roughly 29 x 23".

This small collection contains an autograph book with signatures collected by William H. Young, circa 1833 to 1892; one page of autographs from on board the U.S. steam frigate Niagara in 1857; and a memorial resolution from the RPI Board of Trustees following Young's death in 1904.

This item contains loose class notes for civil engineering courses taken by J. Milton Wright, Class of 1927. Topics include the Fink Roof Truss, showing a drawing of the truss structure, the scale, distance, pitch, and wind and snow loads of the truss, and the length of the roof. Also included in these notes are blueprint drawings for a concrete retaining wall design.

Contains a report by Joseph M. Wilson (RPI Class of 1858) titled "Review of Iron Roof Over Union Passenger Depot," 1867.

Maps and drawings depicting aqueducts, watersheds, and filters in Philadelphia, including a design of Basin No.3 of the Belmont Reservoir, as well as the Perkiomen, Tohickon, and Neshaminy storage reservoirs. U.S. Geological maps in the collection include Pennsylvania, New York, Delware, and Massachusetts. Also, maps and diagrams of section tunnels, a profile of Schuylhill navigation, and consumption of water by private residents.

This collection contains a handwritten letter from Rensselaer student Alfred Tredway White (RPI Class of 1865) to his uncle "Gus" regarding President Lincoln's assassination, with an addendum regarding fishing gear. Accompanying the original is a transcription of the letter.