N.Y. Soc. Serv. Law § 472-j

§ 472-j. Custody of children, how acquired; notice to corporation.\nThe corporation shall be deemed to have acquired lawful care and custody\nof any child between the ages of six and eighteen years who shall have\nbeen surrendered to it by its parent or guardian; provided that such\nsurrender is evidenced by a writing executed by such parent or guardian\nsetting forth the name and age of the child, the date of surrender, and\nthe term for which such surrender is made, and expressly vesting in the\ncorporation all the powers and control over the child of which such\nparent or guardian was possessed; provided that no such surrender shall\nbe made except upon five days' previous notice of the intention to make\nsuch surrender in writing, by the parent or guardian of the child to the\nsaid corporation or its agents.\n