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- Hale, Harrison, 1879-19661
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- Herrera, Alfonso L., 1868-19421
- Ibarra Loring, Eduardo.1
- Illinois. Department of Public Welfare, author.1
- Ireland, M. W. (Merritte Weber), 1867-19521
- Keen, William W. (William Williams), 1837-19321
- Keen, William W. (William Williams), 1837-1932 author1
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- Lira M., José Bernardo.1
- Lyon, Bertrand, 1880- author1
- McCombs, Robert S. (Robert Shelmerdine), 1880-, author1
- McDougall, William, 1871-1938, author1
- Mouritz, A. A. St. M. (Arthur Albert St. M.), 1861-19431
- Munson, Edward Lyman, 1868-1947, author1
- Muñoz Pal, Basilio.1