Digest of United States patents of air, caloric, gas, and oil engines, 1789-1905,
chronologically arranged under two hundred and five subdivisions ...
Comp. and arranged by James T. Allen ...

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Item Link Original Source
Full view   v.1 University of Michigan
Full view   c.1 v.1 plates University of Chicago
Full view   c.1 v.5 index University of Chicago
Full view   v.2 University of Michigan
Full view   v.3 University of Michigan
Full view   v.4 University of Michigan
Full view   v.5 University of Michigan
Full view   v.5 Harvard University