N.Y. Uniform Commercial Code Law § 3-119: Other Writings Affecting Instrument

Section 3--119. Other Writings Affecting Instrument.

(1) As between the obligor and his immediate obligee or any transferee

the terms of an instrument may be modified or affected by any other

written agreement executed as a part of the same transaction, except

that a holder in due course is not affected by any limitation of his

rights arising out of the separate written agreement if he had no notice

of the limitation when he took the instrument.

(2) A separate agreement does not affect the negotiability of an

instrument.