BAKER RUN-IN-OIL WINDMILLS: Most Economical Power in the World.
Napoleon, Ohio: Heller-Aller Co., (1934). First Edition. Broadsheet, printed in black and red (8.5" x 10.5"), folds to pocket size; illustrations of windmills and engnes, with promotional text. "Oil once a year. Lasts a Life Time. Fits on any make Tower." More