Letters, invoices, accounts, and land, legal, and military papers of Jellis/Jelles Fonda of Montgomery County, N.Y. Also contains two ledgers of his general store in Caughnawaga (Fonda), Montogmery County, N.Y. Subjects of note include Fonda's trade with London markets and with Native Americans, many of whom were customers in the ledgers. Includes some photocopies.