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- United States. Central Intelligence Agency 14
- United States. Department of Agriculture 8
- United States. Department of Commerce 7
- Field Museum of Natural History 6
- National Renewable Energy Laboratory (U.S.) 6
- United States. Government Printing Office 5
- Library of Congress 3
- Minami Manshū Tetsudō Kabushiki Kaisha 3
- United States. Department of Energy 3
- Center of Military History 2
- Chicago Natural History Museum 2
- China. Xin xi chan ye bu 2
- Chinese Red Cross Society 2
- Macmillan Company 2
- North China herald 2
- U.S.-China Economic and Security Review Commission 2
- University of Oregon 2
- Yanjing da xue 2
- Air University (U.S.). Air Command and Staff College 1
- Air University (U.S.). Air War College 1