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- United States. Congress. House19
- Smithsonian Institution. Board of Regents14
- Negri, Massimo5
- Bawden, William T., (William Thomas)4
- Colwell, N.P.4
- Macdonald, Sharon4
- Rea, Paul Marshall4
- Smith, Anna Tolman4
- Smithsonian Institution4
- United States. Department of the Interior4
- United States. Department of the Interior. Bureau of Education. Commissioner of Education4
- Van Sickle, James H. (James Hixon), 1852-19264
- Abbot, C.G., (Charles Greeley)3
- Briggs, Thomas Henry, 1877-19713
- Buchner, Edward Franklin3
- Capen, Samuel Paul, 1878-19563
- Cohen, Richard I.3
- Deffenbaugh, W.S., (Walter Sylvanus)3
- Hodge, George B., (George Baird)3
- Hough, Walter3