Original 1961 hardware trade vintage catalog for the NATIONAL MANUFACTURING COMPANY.  Main office and plant were located at 

Manufacturers of Interior Sliding and Folding Door Hardware.

Products include By-passing & Pocket Hardware for Heavy-Duty Doors, By-passing Sliding Door Hardware featuring One-Piece Aluminum Track, Fold & Slide Sets with Surface & Concealed Hardware, all are fully featured.

Has numerous product images, detailed illustrations, description, applications and architect specifications to provide product info.

Unbound from a large rare 1961 Architectural Catalog File, this unique old eight-page technical brochure would display beautifully matted and framed. Nice cover graphics. A fabulous addition to your retro door hardware industry library.