Kento purchased a refrigerator-freezer from the Elway Appliance Shop for $900. The purchase was made over the phone, after which Elway sent Kento a letter thanking him for the purchase of the refrigerator-freezer. Before the appliance was delivered to him, Kento telephoned Elway and canceled the purchase. Elway then sued for damages, and Kento raised the defense that the contract was unenforceable. Elway produced a copy of the letter that it sent Kento. Does this letter help Elway to win the case?