N.Y.C. Admin. Code § 28-103.5: § 28-103.5 Seal; judicial notice.

The commissioner may design and adopt a seal for the department for use in the authentication of the orders and proceedings of the department, and for such other purposes as the commissioner may prescribe. The courts shall take judicial notice of such seal, and of the signature of the commissioner, the deputy commissioners, and the borough superintendents of the department.