McCormack v. Cockburn

The majority of the court is now of the opinion that parol evidence was not admissible to establish ■ the facts on which appellee Cockburn was released from his liability on the notes in issue. McCormick & Ray in their Texas Law of Evidence, Sec. 725, say: “The Parol Evidence Rule is the rule which, upon the establishment of the existence of a writing intended as a completed memorial of a legal transaction, denies efficacy to any prior or contemporary expressions of the parties relating to the same subject-matter as that to which the written memorial relates.” The deed from appellants to…