Briggs & Stratton Corporation, Milwaukee, Wisconsin Operating and Maintenance Manual with Parts Catalogue for 4 Cycle Gasoline Engine Model "I" type numbers from 206100 and up. Undated but 1920's or 1930's.  32 pages.  32 illustrations.  152mm x 228mm.  Card covers very soiled/bumped/creased, staples rusty with one 4 page section loose, page creasing/browning and some light staining, a working copy only.