New York Laws
Title 11 - Consideration; Effect of Writing on Requirement of Consideration
5-1113 - Written or Published Promise or Reward.

ยง 5-1113. Written or published promise or reward. A promise to pay a
reward for return of lost or mislaid property is not unenforceable
because of absence of consideration if the promise was made in writing
or the promisor caused it to be published.