Authors: e
- Holub, Emil 1847-1902
- Home, Ethel -
- Hood, Edwin Paxton 1820-1885
- Hooker, Edward Niles -1957
- Hook, Theodore Edward 1788-1841
- Hooper, C. E. -
- Hoover, J. Edgar (John Edgar) 1895-1972
- Hopkins, Charlotte Everett 1851-1935
- Hopkins, Edward Washburn 1857-1932
- Hopkins, Ellice 1836-1904
- Hopkins, Emma Stelter 1870-
- Hopkins, Evan Henry 1837-1918
- Hopkins, Pauline E. (Pauline Elizabeth) 1859-1930
- Hopkirk, Edith -
- Hoppé, E. O. (Emil Otto) 1878-1972
- Hoppenstedt, Elbert M. -
- Hopper, Hedda 1885-1966
- Horne, R. H. (Richard H.) 1802-1884
- Horn, Ernest 1882-1967
- Hornung, E. W. (Ernest William) 1866-1921
- Horsley, Reginald 1863-1926
- Horton, Edith -
- Hoskyn, E. L. (Elizabeth Louisa) -
- Hostos, Eugenio María de 1839-1903
- Hotchkiss, Willard E. (Willard Eugene) 1874-
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