2006 New York Code - Grant Of Fee Or Freehold.

 
    §  243.  Grant  of  fee  or  freehold. A grant in fee or of a freehold
  estate, must be subscribed  by  the  person  from  whom  the  estate  or
  interest  conveyed is intended to pass, or by his lawful agent thereunto
  authorized in writing. If not duly  acknowledged  before  its  delivery,
  according  to the provisions of this chapter, its execution and delivery
  must be attested by at least one witness, or, if  not  so  attested,  it
  does  not  take effect as against a subsequent purchaser or incumbrancer
  until so acknowledged.