Scientific American, Vol. 56, No. 4 (January 1887)

1887 · 16 pictures

Patents · Contained · Piston · Patented · Plow · Scientific American · Munn · Circuit court · Address munn · Years ago · Hapgood plow · Piston rod · Half spindles · Natural gas · American supplement · Valve stem

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