Notebook with listing of Cornells with cities, states, and businesses. Also list of people to whom circulars of Cornell University were to be sent.

Diary of 1841 trip to New England to visit mills, observe uses of waterpower, and promote Ithaca as a manufacturing center. Includes detailed description of Boston and many New England mills and factories. Daily entries in 1848 and 1851 concern telegraph business and travels through New York and New England checking and repairing lines.

Notebook, includes financial accounts, lists of names and addresses, and copies of letters.

Diary with daily entries from journey through the South selling plows and plow patent rights. Provides description of travel by railroad, steamboat and foot, reports on personal health and treatments, and details of meals, including "a real log cabin supper." Diary includes observations of Southern businesses and descriptions of Monticello and Mount Vernon.

Continuation of diary of trip to the South, with descriptions of Washington, D.C., the White House, the Capitol, the Patent Office, and Philadelphia.

Notebook from trip to the South, includes remedies for the croup and consumption, census figures for counties in North Carolina, plow business notes and accounts, details of routes traveled, and notes on Southern factories.

Diary of Cornell as the Superintendent of the New York, Albany & Buffalo Magnetic Telegraph Company. Includes details of travel, directives given, and repairs made on lines. Diary ends with resignation submitted to Theodore Faxton.

Diary of work on New York telegraph lines. Includes details of line maintenance and operations.