Newcomen publication
Newcomen Society in North America
William B. Johnson
Newcomen Society in North America 1973 Newcomen publication no. 971
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Carl Horn, Jr
Newcomen Society in North America 1973 Newcomen publication no. 969
Charles G. Bluhdorn
Newcomen Society in North America 1973 Newcomen publication no. 970
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by Conrad Newton Lauer
Newcomen Society, American Branch 1939 Newcomen publication 1939
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contributed by Duncan J. Kerr
Newcomen Society, American Branch 1938 Newcomen publication 1938
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