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- SpringerLink (Online service)341
- Adam Matthew Digital (Firm), digitiser140
- United States. Office of Education140
- AM (Publisher), digitiser111
- University of the State of New York96
- United States. Congress. House. Committee on Education and Labor. Subcommittee on Elementary, Secondary, and Vocational Education91
- Sallie Bingham Center for Women's History and Culture, owner68
- United States. General Accounting Office57
- Spencer, Herbert, 1820-190355
- Rousseau, Jean-Jacques, 1712-177852
- United States. Congress. Senate. Select Committee on Indian Affairs47
- United States. Congress. House. Committee on Education and Labor46
- Edward E. Ayer Collection (Newberry Library), owner45
- Indiana. Dept. of Public Instruction45
- United States. Congress. House. Committee on Education and Labor. Subcommittee on Select Education45
- Comenius, Johann Amos, 1592-167043
- California. State Department of Education41
- Dewey, John, 1859-195240
- Educational Policies Commission38
- Illinois. Office of the Superintendent of Public Instruction38