Authors: Ro
- Hirsch, Robert Reynold -
- Hitchcock, Roswell D. (Roswell Dwight) 1817-1887
- Hobart-Hampden, Augustus Charles 1822-1886
- Hobson, R. L. (Robert Lockhart) 1872-1941
- Hoe, Robert 1839-1909
- Hoerschelmann, Rolf von 1885-1947
- Hogg, Robert 1818-1897
- Holliday, Robert Cortes 1880-1947
- Holloway, Robert -
- Holloway, Robert, active 1771-1808 -
- Holmes, Robert Derby -
- Holt, Mary Roxy Wilkins 1869-
- Holt, Rosa Belle -
- Hooker, Le Roy 1840-1906
- Hooke, Robert 1635-1703
- Hope, Robert Charles 1855-1926
- Hopkins, R. Thurston (Robert Thurston) 1884-1958
- Horniman, Roy 1874-1930
- Horsfall, R. Bruce (Robert Bruce) 1869-1948
- Horton, Robert F. (Robert Forman) 1855-1934
- Hoskins, Robert 1933-1993
- Hoskins, Robert, Mrs. 1837-
- House, Roy Temple 1878-
- Howard, Robert E. (Robert Ervin) 1906-1936
- Howe, Robert Harrison -
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