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- AM (Publisher), digitiser571
- Gilder Lehrman Institute of American History, owner566
- United States. Congress. House404
- United States. Department of State171
- Darwin, Charles, 1809-1882136
- Humboldt, Alexander von, 1769-1859126
- United States. Congress. Senate96
- American Geographical Society of New York90
- Bolívar, Simón, 1783-183086
- A. Hoen & Co83
- United States82
- Films for the Humanities & Sciences (Firm)71
- Infobase71
- Scott, Winfield, 1786-186671
- United States. Department of Commerce and Labor. Bureau of Manufactures45
- ebrary, Inc41
- Hale, Aurelia, cb. 179840
- Ulloa, Antonio de, 1716-179540
- United States. Department of Commerce. Bureau of Foreign and Domestic Commerce (1913-1953)38
- United States. Department of Commerce and Labor. Bureau of Statistics37