MECHANICS' TOOLS MANUFACTURED BY DOUGLASS MANUFACTURING COMPANY, ALSO, EXCLUSIVE MANUFACTURERS OF COOK'S PATENT BORING IMPLEMENTS. Warehouse, 45 & 47 Chanbers Street, New York. May 1st, 1873. Not really a catalog, this four page flyer was apparently mailed to holders of the catalog in an attempt to clarify misrepresentations by other manufacturers. As a result, in four pages there is a concise and complete review of the full line of tools manufactured by the Douglass Mfg. Co.