Field notebook for RPI's Junior Class Hydrographic and Topographic Survey, kept by Adolph Kohlhofer, Class of 1912. The notebook includes sketches of surveys, tide gage readings, level notes, notes on the Hudson River, various computations, and related information. Kohlhofer also listed the surnames of other students who worked on both surveys with him.

Handwritten notebook on philosophy and alchemy signed by the writer, only known as Chaudes. The entire notebook is written in French, except for some drawings at the end, which are described in Latin. The drawings appear to depict how water and oil droplets respond to different materials, like dirt, coal, sulfur, and ash.

Ambrose V. Powell's (RPI Class of 1868) diary, dated 1865. Powell describes his college experience as a student at Rensselaer, and writes about news of the Civil War. The most noteworthy diary entries describe Powell's reaction to President Lincoln's assassination, how the city of Troy mourned the passing of the President, as well as mentioning his visit to Albany to view President Lincoln's casket.

This collection covers the entirety of American Can Company’s years of business, from 1901-1989, with a large number of photos (many duplicates of the same company distributed photos). It also includes personal reference books of former employees, publications distributed by the company, and tools of the trade. Blueprints, correspondence, articles, and photographs make up the bulk of the collection.

RPI Professor Edward R. Cary's "A Short Lecture Course on the Construction of Diagrams for The Div. B - C.E. Students at R.P.I." Cary was RPI Professor of Surveying and Railroad Engineering, and his typescript lists the kinds of diagrams presented in the course, such as comparison and conversion diagrams, alignment diagrams, and logarithmic diagrams.

Letter, 9 October 1929, from Barney Bluestone to Major B. L. Fields, concerning the 1850 U.S. "Liberty Cap" silver coin which he was sent to P. James Clarke of Jameston, NY; U.S. pattern coins sent to Fields on approval for his puchase; and information on purchasing the book United States Pattern, Trial, and Experimental Pieces; Being a List of the Pattern, Trial and Experimental Pieces Which have been Issued by the United States Mint from 1792 up to the Present Time by Edgar H. Adams and William H. Woodin. The letter is on Barney Bluestone letterhead.

This collection includes photographs, ephemera, funeral home records, and articles related to the Joseph Madia and Eleanora Cariti Madia, Josephine Madia Bihary, and Joseph Bihary with materials related to their children David and Barbara. The time period ranges from 1886 through 1987.

Log book containing records of the Port Henry Blast Furnace in Mineville, Essex County, New York (1840-1859) and the Sisco Furnace in Westport, New York (1857-1859).

This leather bound notebook, kept by Burton Lowther, Rensselaer Class of 1901, titled "Level and Transit," contains student survey notes and level charts about various places in Troy, New York, such as Congress Street, the Post Office, and 8th Street.

Original ink drawing by Randy Rumpf depicting two RPI students with the following caption: "The Prof. said, 'Use the computer to get the trajectory,' right?" The students are shown with a computer and sling shot next to a dump.

This student notebook, kept by Charles D. Curtiss, Rensselaer Class of 1855, contains lectures in spherical trigonometry, compass surveying, and notes on Curtiss' investigation of logarithms. This notebook also includes financial accounts of the Potsdam Watertown Railroad in 1853, and notes regarding RPI's 1853, 1854, and 1855 commencements.

Ledger from a Union prison in Alexandria, Virginia, that documents the transgressions of Union soldiers. Includes prisoners' name, regiment, company, charges, charging official, and remarks. Includes prisoners from the following regiments: 5 NY, 16 NY, 109 NY, 28 MA, Colored, 11 US, 44 NY, 3 MD, 112PA, 15 CT, and many others.

This photo album, kept by David E. Reader (RPI Class of 1927) depicts Reader and his college classmates, campus scenes and buildings, and RPI events, such as tug of war and the Push Ball Rush.

Manuscript minute book of the Delta Kappa Epsilon chapter of Troy University. The book contains no covers.

This item, from the U.S. Naval Station in New Orleans, Louisiana, was designed under specification of the Bureau of Yards and Docks, Navy Dept. It was constructed under the direction of Rear Admiral Mordecai T. Endicott (RPI Class of 1868, U.S.N. Chief of Bureau of Yards and Docks) and tested under the supervision of Civil Engineer A.C. Cunningham, U.S.N. (RPI Class of 1885).

A signed letter from geologist Ebenezer Emmons, RPI Class of 1826, to a potential assistant on the Geographical and Agricultural survey of North Carolina. The letter discusses the politics of appointing an assistant and the nomination of Dr. Thompkins.

Notebook kept by Edward M. Grant (RPI Class of 1860) on a series of lectures by Professor William Elderhorst, compiled circa 1859.

This item is a letter to RPI student, Edward Root Kellogg, Class of 1841, from his father, regarding a request for money while at Rensselaer, dated June 27, 1840. Edward asked his father for twenty five dollars, and in the letter, his father says that he's sent twenty six dollars for him.