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 complaint, in an action by a broker for commissions for procuring a purchaser for real estate, alleged that he procured a tenant for defendant for certain premises; that a lease for a specific number of years was executed, which reserved to the tenant the privilege of purchasing the premises for a specified sum at any time within a specified period; that before the expiration of the period he induced the tenant to consummate the purchase, and that he demanded as his commissions a specified sum, which defendant refused to pay, was bad for failure to allege the employment of the broker to effect a sale. Morris v. Poundt, 99 N. Y. S. 844, 51 Misc. 6; Wefel v. Stillman, 151 Ala. 249, 44 S. 203.
 
Continue to: