![[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. General Accounting Office
United States. Congress. Senate. Committee on Privileges and Elections
United States. Bureau of the Census
United States. Congress. Senate. Committee on Education and Labor.
James E. Thorold Rogers
