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.
A real estate broker who founds his right of action for commissions on the owner's agreement to give him the sole and exclusive right of sale of the property, and alleges a breach of such agreement and a sale effected by the owner, must prove that such an agreement was entered into. Wychoff v. Taylor, 13 Daly (N. Y.) 564. See also Sec. 13.
 
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