Collections : [Rensselaer Polytechnic Institute, Institute Archives and Special Collections]

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.

This collection contains miscellaneous memorabilia from the Albany Female Academy, including multiple class pictures from the 1870s, a bound 52nd Annual Report, dated 1893, and a copy of the 60th Annual Alumni Hospitality Committee meeting, circa 1901.

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.

This collection contains memorabilia related to Alexander R. Colyer (RPI Class of 1923). Items include student grade cards, a Senior Hop dance card, a 1923 commencement invitation, two letters from RPI President Palmer C. Ricketts to Colyer's father, Charles, and a 1926 letter admitting Alexander to the American Institute of Electrical Engineers.

Materials pertaining to Alfred Krehbiel, Rensselaer Class of 1917, include a panoramic photograph, and a photocopied section identifying Alfred, a 1917 RPI commencement program, a 1956 obituary, and the Class of 1917 Fiftieth Anniversary Memoirs book, including a letter from Wynkoop Kiersted, Jr. to Theodore Krehbiel, 1967.

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.