Diary of work in the telegraph business in New York and the west. Includes the consolidation with the House Company, Cornell's work as superintendent of part of the Union line (responsible for the Erie & Michigan line from Buffalo to Milwaukee and also of the circuit west of Cleveland), and a description of Hughes printing telegraph. Also includes details of travel and some family news.

Diary and cash accounts. Includes details of visit to oil wells in Titusville, travels on telegraph business, work with the New York State Agricultural Society, and the coal oil business.

Diary and cash accounts. Includes details of life in Ithaca where Cornell is "home all day" and involved in the Tompkins County Agricultural Society, the Farmers Club, raising sheep and cattle, and collecting agricultural statistics. Also includes travels to Washington, D.C. and attendance at Lincoln's inauguration.

Diary and cash accounts. Includes work in the New York State Legislature, interest in agricultural machinery, and a proposal to rescue the agricultural school and start an agricultural and military school. Also includes some detail of trip to England and Europe.

Diary of trip to England, with details of the crossing from New York to Liverpool, travels in England and herds of pedigreed shorthorns visited. Also includes an alphabetical listing of Cornells in the United States with addresses and dates.

Diary of travels in England, herds inspected and animals purchased.

Diary and cash accounts. Includes records of telegraph stock and various financial records. Note in back of diary to "enquire what the effect of large endowments are upon colleges in the Old World -- How many graduates do they send out, & c."

Diary and cash accounts. Includes notes on Cornell family history and genealogy, business notes, and Western Union and Albany Agricultural Works financial statistics.

Diary of trip to Pennsylvania to examine the coal mines near Towanda.

Diary and cash accounts. Includes details of trip to Wisconsin to "hunt lands" and other work concerning Cornell University and college land scrip. Also includes Western Union business and financial notes.