This section is from the book "American Law Of Real Estate Agency", by William Slee Walker. Also available from Amazon: American law of real estate agency.
In an action by a broker for commissions in purchasing lands for defendants, defendants having introduced the vendor as a witness, and he having testified that he paid commissions to such broker for effecting the sale, it was not error to exclude evidence of the amount paid by him, it being immaterial. Lindt v. Schlitz Brewing Co., 113 Iowa, 200, 84 N. W. 1059.
 
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