In Central Power and Light Company v. Del Mar Conversation District, 594 S.W.2d 782, 789 (Tex. Civ. App.--San Antonio 1980, writ ref'd n.r.e.), the court determined a collection of written letters satisfied the statute of frauds when they were signed by the party to be charged and delivered to others, including the party seeking to enforce the agreement. Id. 786-88. The documents clearly confirmed an agreement which the parties had both honored for seventeen years. Id.