Profits 1936-1944.
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First published: 1947
![[William Wheeler Hubbell, authorized to apply for patents.]](https://covers.openlibrary.org/b/id/10200621-M.jpg)
United States. Congress. Senate. Committee on Patents
United States. Bureau of the Census
Sven Beckert
Leslie Davis Burns
Tamara K. Hareven
Harriet L. Herring