New York Consolidated Laws, Civil Practice Law and Rules - CVP § 3131. Scope of interrogatories

Interrogatories may relate to any matters embraced in the disclosure requirement of section 3101 and the answers may be used to the same extent as the depositions of a party.  Interrogatories may require copies of such papers, documents or photographs as are relevant to the answers required, unless opportunity for this examination and copying be afforded.