Uncle Sam needs that extra shovelful Help Uncle Sam to win the war by following these directions: 1. Fire small amounts of coal often. 2. Keep fuel bed even by putting coal on thin spots. Avoid raking and slicing. 3. Keep fuel bed about six inches thick. 4. Look out for air leaks in brickwork. 5. Increase or decrease steam pressure by opening or closing draft damper in uptake. 6. Clean fires when the demand for steam is small, and while cleaning have the draft damper partly closed. United States Fuel Administration
United States. Fuel Administration
World War I Poster Collection
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World War, 1914-1918--Posters
Uncle Sam (Symbolic character)
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