Mary Lowe, in the presence of her son, David, and Allen Amdahl, wrote: "January 26, 1987. I, Mary Lowe, in the presence of David Lowe received from Allen Amdahl $1.00 in cash binding the sale of my farm (of 880 acres) for the amount of $210,000 with final payment due Nov. 1, 1989. Terms of Agreement have been mutually agreed to by both parties. Contract drawn up as soon as possible." She signed this statement, and David Lowe witnessed it. Amdahl wrote on the back of the paper a payment schedule but did not sign the paper. When he returned with a formal contract, Lowe refused to sign. Amdahl sued. Was there an enforceable contract? [Amdahl v. Lowe, 471 N.W.2d 770, Sup. Ct., N.D. (1991)]