Scientific American, Vol. 36, No. 23 (June 1877)

1877 · 15 pictures

Patents · Iron · Inches · Valve · Boiler · Feet · Scientific American · Water · Sulphuric acid · Sheet iron · American patent · Compressed air · Alternate board · American supplement · Horse power · Safety valves · Patent office

Internet Archive · Public domain (published before 1931) · More from this library