How diversified the requirements of the postal service are is illustrated by the work of the Drafting Section, under the direction of Mr. John T. Rathbun, whose corps of draftsmen are constantly engaged in laying out new stations, replotting equipment in different units as various changes incident to the growth of the city necessitate, or as changes in the regulations affect the volume of business at different points. This section includes also a corps of mechanics engaged in the repair and maintenance of mail-handling apparatus and equipment. _The Supply Department_ The Supply Department of the New York post-office corresponds to a well-equipped store and printing establishment. It is under the superintendency of Mr. William Gibson. By this division supplies are furnished not only to the New York office and its stations, including those on naval vessels, but to post-offices throughout New York State, as many as 2200 points in all being cared for. Among the items supplied are 5,000,000 penalty envelops and 1700 different varieties of forms and books, of which approximately 60,000,000 copies are used annually. This department furnishes 250 different items of stationery and of janitors' supplies, and innumerable repair parts for a great variety of mechanical contrivances used in the postal system. The aim of the official in charge of the department is to keep in touch with the latest labor-aiding mechanical devices that can be utilized in the service, and among the various bureaus and sections will be found more than 300 type-writers, eighty adding-machines, cancelling machines, check-writing, check-protecting, accounting, and duplicating machines. For these numerous repairs are required and parts have to be secured, all of which is attended to by this department. A feature of this department is a well-equipped printing section, which prints a daily paper or bulletin containing instructions, orders, and information for the employees, as well as numerous forms, posters, placards, etc., utilizing in this work a monotype type-setting machine, two cylinder and five job presses. A detail in its workshop is the precancellation of postage-stamps, to meet the requirements of large mailers who desire to purchase them, of which the yearly output is approximately 250,000,000. _The Classification Section_ In the Division of Classification all questions involving rates and conditions of mailing are passed upon. At the head of this section is Mr. Frederick G. Mulker, whose experience with these matters is probably unequaled.