"The Smyth No. 3 Book Sewing Machine is a precision machine into which have gone the finest in materials and workmanship. In order to obtain maximum production, the operating and maintenance personnel must thoroughly understand the machine and its capabilities. The purpose of this booklet is to furnish a ready reference for personnel who operate and maintain Smyth Book Sewing Machines. It contains a description of the machine and the necessary instructions and diagrams for operation, setup and maintenance. An index of parts is included for identification of replacement parts to facilitate ordering." - from front matter
In addition to instructional text, also includes full index of parts, as well as illustrated diagrams of each part. Includes sheet with handwritten note reading, "Don't lose this -- it's hard to get. - R.M."