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.

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.

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.

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.

Certificate for the "Loyal Order of the Bath Towel," dated 1951, which honors Emil (Pagie) Page's service to the '87 Gymnasium and Rensselaer's athletes. The certificate is signed by various alumni.

This photograph album, created by Ernesto J. Balbin, RPI Class of 1882, documents the construction of the Canal de Albear Aqueduct in Havana, Cuba. Balbin was the chief engineer on the aqueduct project.

A pamphlet, entitled "An Abridged Summary of the Rational Theory of Relativity," written by F. Harrison Stamper, RPI Class of 1921.

Field survery notebook by Barnes & Jenks, which was possibly kept by an RPI alumnus. The notebook contains graphs, mathematical equations, latitude and longitude coordinates, and numerous other scientific and mathmatics tables.

Notebook from 1918 consisting of information on military bridge building, and different military bridge types and styles, written by Fred W. Ryder.

This small collection, from Fred W. Schwartz, Class of 1905, contains typed loose notes from a course titled, "Division A. Topics in Electrodynamics." Included in this collection is a class topic schedule, homework list, a blueprint drawing of a brush arc light machine, and a table used to determine machine power and torque.

This landscape design, titled "On the Hill," details the topography and grounds of the home of R.C. and G.R. Reynolds in Wynantskill, New York. The landscaping was designed by Garnet D. Baltimore, RPI Class of 1881, who was Rensselaer's first Black graduate.

Bound autograph album signed by members of the Rensselaer Polytechnic Institute Classes of 1859 to 1862.

One photostatic copy of a letter from George Horton to Hendrick B. Wright, dated 1827. The letter describes the method of education at the Rensselaer School. Also includes a typed transcription.

Bound volume labeled "Manuscript Catalog of Library and Inventory of Apparatus in the Handwriting of Dr. George H. Cook and Prepared by him when Director - Presented by his son Paul Cook in 1890 to Library of R.P.I." The volume is divided into three sections: Catalog of Books in the Library of the Rensselaer Polytechnic Institute, including columns for the number of volumes, original cost, and the then current value of each book; Mathematical and Philosophical Apparatus, including original cost and then current value; and Memorial Services for George Hammell Cook from the Rutgers Targum, circa 1889.

Seventeen color printed pages showing the text and artifacts in the George M. Low Gallery in the Jonsson Engineering Center at Rensselaer Polytechnic Institute. Includes three photographs showing Astronaut John Swigert Jr., with accompanying biographical information, and an image of Kevin Bacon, who played John Swigert in the movie "Apollo 13," which was released in 1995.

This poster, measuring 14" x 22", was created to promote a Grand Marshal Week Carnival held in 1994.

The Handy Mechanics Chart contains information on the size of drill and pipe threads, as well as a small conversion chart for linear and square measures.

This photograph album, created by H.C. Bowen, includes photographs of various views and angles of Pitch Lake, digging property, and laying asphalt in Trinidad.

Written by Rensselaer Polytechnic Institute alumnus Henry Sedley (Class of 1848), "An Engineer in El Dorado" is a personal account of his time at RPI, moving to California after graduating, the 1849 San Francisco fire, and the California gold rush.

Original ink and watercolor cartoon by Randy Rumpf depicting RPI men's ice hockey. Item measures 34.5" wide by 23" high.

This student notebook is from the first computer class taught at RPI, in the Spring of 1957. It was a combined analog and digital computing course taught by Professor Nash of the Math Department. The notebook was kept by Jacob Abel, RPI Class of 1957. Contained in the notebook are homework problems and equations on a variety of topics, including cross fields, trigonometry, applied physics, and information on digital computers.

This large album of photographs taken by James A. Simons, RPI Class of 1918, documents his college years, his service in the United States Navy, travel and recreational activities, and employee social events at Cutler-Hammer. All but a few of the photos are numbered, dated, and identified.

This notebook, kept by J.C. Cloud, contains printed data, illustrations and diagrams about the production of electronic light, and also covers topics such as heat and power. Other information in the notebook includes prices, output, etc. of various power stations, dynamos, and motors.

This item is a student notebook of John A. Ubsdell, RPI Class of 1889. The notebook was titled, "Notes on Adjustment and Use of Instruments," after a course given by David M. Greene, who was a Director and Academic Head of Rensselaer. Topics in the notebook include scientific instrument use, mathematic formulas and equations, level measurements, and figure drawings of how to use certain instruments, such as transits.

This item is a scrapbook documenting Rosenholtz's personal and professional life. Many family photographs are included, as well as documents and photographs related to his professional career as head of the Geology Department at Rensselaer Polytechnic Institute, which spanned from 1922 to 1963.

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

The item is the first Alan M. Voorhees lecture, held on October 4, 1979, given by Dr. Lewis M. Branscomb. The lecture was titled "The Revolution of Microelectronics," and highlights advancements in telecommunications, computers, and computer chips.

This item is a copy of an article based on research done on the Paul Harteck collection at the RPI Institute Archives and Special Collections, by Manfred von Hassel. The article is entitled "Die Harteckshe Uranmaschine," or "Harteck's Uranium Machine." The article is mostly in German.

This volume records meteorological information during two time spans. The first, taken between January and May of 1827, includes temperature readings taken three times per day along with wind speed and weather. The second set of readings, taken between January and June of 1843, includes temperature (recorded four times daily), barometric pressure, clearness of the sky, wind velocity, and rain fall.

This item is a student notebook from 1907, containing mechanical mathematical equations from the course "Notes on Mechanics," taught by Professor Palmer Ricketts. The notebook was kept by Needham Waddell, RPI Class of 1908.

Small note pad (3" x 5.5") promoting drawing and other supplies for engineers, architects, and artists. The cover reads "R.P.I. Student Supply Store PAUL D. OWEN 515 Fulton St. - Tel. Troy 2049" and includes a map of the Rensselaer campus showing directions to Owen's store.

This is a dismantled photograph album consisting of eight pages filled with small images identified in white ink. It contains photos of RPI students, buildings, campus views, campaign signs for student elections, the 1928 Grease Rush, students singing "Ah Me," the Cohoes Falls, and ruins of Liggett's Paper Factory. Although the creator is unknown, there are photos of Paul E. Martin (RPI Class of 1831), Harold A. Lesure (Class of 1928), "Red" Dombrosky, "Bud" Parkin (probably Ernest J., Class of 1928), and Bill E. Goodere.

This detailed syllabus from Professor Hiram Harris' course, Ultra High Frequency Techniques, includes a course outline, the hours of the class being taught, the course textbook, lecture notes, homework problems, and related information.

A spiral bound proposal to the Dormitory Authority of the State of New York for building construction and renovation on the Rensselaer campus.

This student notebook, kept by Richard G. Len, RPI Class of 1947, contains notes from a course titled Electric and Magnetic Circuits I. The notes include experiment reports in electrical engineering, focusing on currents, circuits, and electrical resistance.

This item contains lecture notes and printed materials from the book Fluid Mechanics, Chapters 6-8, from a course taught by RPI professor and academic head, Paul Hemke, dated 1937. The notes were kept by Robert Gorton, RPI Class of 1937. Topics include dimensional mathematics, problems and questions from the Fluid Mechanics book, and different scientific and mathematical equations.