Palmer made a valid contract with Ames under which Ames was to sell Palmers goods on commission

Question:

Palmer made a valid contract with Ames under which Ames was to sell Palmer’s goods on commission from January 1 to June 30. Ames made satisfactory sales up to May 15 and was then about to close an unusually large order when Palmer suddenly and without notice revoked Ames’s authority to sell. Can Ames continue to sell Palmer’s goods during the unexpired term of her contract?