I have a beautiful limited color reprint of the Stover Engine Works #20 Gas Engine Catalog. Don't know if it is 1915 or 1920 as there is no date in it. Front and back are color and there is some red color on each page. It is  34 pages. Face stapled and front and back are card stock. Really nice  pics of the different engines as well as alot of specs and pics of each size.  Sizes from 1 HP to 60HP covered. It covers the different sizes and parts, and tasks each model can do. really nice pics of the different engines. It measures 8 1/2" by 11". It is a rare edition with so much Stover information. This has been rescaned and cleaned up. It has been scanned and reprinted onto high quality paper and cardstock. The engines are really pics and overall it came out very nice for the age. please look at all the pics before you decide. a great addition to any collection.