This collection contains a personal expense notebook kept by Clark S. Thomas, a student at South Dakota State College from 1937 to 1941. The notebook documents his daily expenses—including meals, entertainment, clothing, school supplies, and income—while in college and during his military service in the U.S. Army Air Corps from 1941 to 1945. Also included are receipts for tuition and fees paid between 1937 and 1941.

The J.M. Aldrich Diaries consist of three volumes documenting Aldrich’s student years at Dakota Agricultural College from 1885 to 1888. The diaries provide a detailed daily account of his experiences during the formative years of the college. Each volume represents one academic year: Volume 1 (1885–1886), Volume 2 (1886–1887), and Volume 3 (1887–1888). Between 1930 and 1932, Aldrich transcribed the original diaries into typewritten copies and added parenthetical annotations for clarification.

Entries are organized by day and date, offering insight into Aldrich’s routine activities, travels between Minnesota and Brookings, and observations of campus life. Although many entries describe ordinary events, they collectively convey a rich portrayal of student life and the broader Dakota Territory environment during the 1880s. Notable topics include transportation challenges, early college operations, and administrative changes, such as the replacement of President George Lilley with Lewis McLouth.

These diaries are a primary source reflecting the student perspective during the early years of Dakota Agricultural College. They document both the mundane and institutional aspects of academic life in the upper Midwest frontier and serve as a foundational narrative for understanding student culture and college development in the Dakota Territory.