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.
Proof that a party has executed a formal contract to convey certain property in exchange for other property is sufficient prima facie evidence of his title thereto, in an action by a broker for commissions on effecting an exchange. Muscowitz v. Hornberger, 46 N. Y. S. 462, 20 Misc. 558. Compare Herscher v. Wills, 103 I11. App. 418.
 
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