I have a reprint of the 1904 Otto Gas Engine works catalog. 33 pages. Scanned and printed on quality paper. front and back are card stock. face stapled. 8 1/2\" by 11\". It covers the small 2 hp no. 20 stationary to the 100hp no. 12. Includes pics of the different engines, trucks, and even the Otto Tractor. Pictures of the engine parts like the valves and cooling system too. also a few of the factory. A lot of good information. Has weights, specs, and even claims from users. Hard to find info.. A few original manuals out there, but they go for a lot of money. this is a cheaper way to enjoy the hobby of collecting engines. a great addition to any collection.

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