On an issue as to whether a loan broker was the agent of defendant in negotiating a loan for him, or the agent of plaintiff company which made the loan, correspondence between the broker and the plaintiff's manager relative to defendant's loan and a requested extension thereof, and concerning other loans made by plaintiff through the broker, is admissible in evidence, and the question is one for the jury. Jesson v. Texas Land & Loan Co., 3 Tex. Civ. App. 25, 21 S. W. 624.