File:Athmospheric railway piston.jpeg

Scientific American, March 5, 1870.

This scan of two images was made by Joseph Brennan in 2004 for Beach Pneumatic. The images appear to be from some even earlier publication, since they have lettered labels that are not referred to in the Scientific American article.

This file is in the public domain because its copyright has expired in the United States and those countries with a copyright term of no more than the life of the author plus 100 years. Public domain //en.wiki.x.io/wiki/File:Athmospheric_railway_piston.jpeg

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