Scientific American, Vol. 22, No. 14 (April 1870)

1870 · 12 pictures

Patents · Iron · Clay · Silver · Canal · Brick · Fire brick · Improved · Feet wide · Carbonic oxide · Cast Iron · Patent office · Scientific American · Steam boiler · Wrought iron · Antedated march · Years ago

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