Lot of assorted owners and maintenance manuals for gasoline engines from an old farm estate. These manuals are mostly dated 1950. There are:
Lauson "Owner's Instruction Manual and Repair Parts List" for model RSH 2 HP 4-cycle air cooled engine from The Lauson Company - a division of Hart-Carter - New Holstein, Wisconsin. This manual has about 22 pages with exploded drawings and about 4 1/2 pages (over 500) of authorized Lauson service locations (organized by state and city).
Lauson "Owners Operating and Maintenance Manual - with Repair Parts Catalog". This Lauson manual covers "Vertical Models 55 SV - RSV 750 - RSV 800 - TLV 900 Engine Series" with 37 pages with exploded drawings, parts lists, 8 pages of authorized service stations etc.
"Operating and Maintenance Instructions with Parts List for Sears Gasoline Engines". This manual covers model numbers 500.700014 & 500.700035. It has 24 pages with drawings and more.
Operating Manual and Parts List - Craftsman '18' Power Mower - Model Number 123.8150 - Included with this Craftsman Power Mower is a Briggs & Stratton 4-cycle Gasoline Motor". This manual has 13 pages with exploded drawing etc.
There are also a number of other assorted engine related items, leaflets, hang tags etc., all with the manila envelope that these papers were being stored in.