2006 New York Code - Contracts Awarded In Absence Of Appropriation.

 
    § 12-111 Contracts awarded in absence of appropriation. a. It shall be
  unlawful  for  any  agency  to incur any expense unless an appropriation
  shall have been previously made covering such expense.
    b.  Bids  for  any  contract  may  be  made  and  opened  without   an
  appropriation  therefor, but such contract shall be awarded only after a
  sufficient appropriation therefor is secured. But any contract  for  the
  purchase  of  fuels,  printing,  stationery,  books  and  other supplies
  required for daily or continuous use  or  for  supplies,  materials  and
  equipment  needed  for  use  immediately after the beginning of the next
  succeeding fiscal year, may be awarded before any appropriation is made,
  provided that such contract shall not be for a longer  period  than  one
  year.