Scope and Contents Ledger, 1838-1853, of personal accounts includes mathematical problems, equations, and tables; correspondence to U.S. Congressman [Thomas O.] Edwards; and an account of Jacob Hamm's estate.

Scope and Contents Geometry and trigonometry copybook, written in French, with two fold-out leaves of figures, belonging to Conrad Winter. At the back are letters and documents in English and German, including a teaching contract between Winter and directors of the school district of Rush Creek Twp., Fairfield Co., Ohio.