Authors: P
- Haben, Parson -
- Hacobian, A. P. (Avetoon Pesak) -1962
- Haeckel, Ernst 1834-1919
- Haffner-Ginger, Bertha 1868-
- Haggard, Andrew 1854-1923
- Hague, Parthenia Antoinette 1838-
- Hale, Lucretia P. (Lucretia Peabody) 1820-1900
- Hale, Philip 1854-1934
- Halkerston, Peter -
- Halleck, Reuben Post 1859-1936
- Hall, Holworthy 1887-1936
- Hall, H. Putnam -
- Halliwell-Phillipps, J. O. (James Orchard) 1820-1889
- Hall, Manly P. (Manly Palmer) 1901-1990
- Hall, N. P. -
- Hall, Philip 1904-1982
- Hallström, Per 1866-1960
- Hamerton, Philip Gilbert 1834-1894
- Hamilton, Elizabeth Emma Proby, Lady 1821-1900
- Hammer-Purgstall, Joseph, Freiherr von 1774-1856
- Hamsun, Knut 1859-1952
- Handcock, Percy S. P. (Percy Stuart Peache) -
- Hankins, Arthur Preston 1880-1932
- Hannikainen, Pietari 1813-1899
- Hannikainen, P. J. 1854-1924
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