N.Y. C.P.L.R. 3111

Rule 3111. Production of things at the examination. The notice or\nsubpoena may require the production of books, papers and other things in\nthe possession, custody or control of the person to be examined to be\nmarked as exhibits, and used on the examination. The reasonable\nproduction expenses of a non-party witness shall be defrayed by the\nparty seeking discovery.\n