Forsythe v. Kimball, 91 U.S. 291 (1875)
U.S. Supreme CourtForsythe v. Kimball, 91 U.S. 291 (1875)
Forsythe v. Kimball
91 U.S. 291
In the absence of fraud, accident, or mistake, the rule is the same in equity as at law, that parol evidence of an oral agreement alleged to have been made at the time of the drawing, making, or endorsing a bill or note cannot be permitted to vary, qualify, or contradict or to add to or subtract from the absolute terms of the written contract.