Authors: H. (sorted by quantity of books)
- Giles, Herbert Allen 1845-1935 12 books
- Sheridan, Philip Henry 1831-1888 12 books
- McCarthy, Justin H. (Justin Huntly) 1860-1936 11 books
- Prescott, William Hickling 1796-1859 11 books
- Blavatsky, H. P. (Helena Petrovna) 1831-1891 11 books
- Kuttner, Henry 1915-1958 11 books
- Wall, Charles Heron - 11 books
- Elwes, R. H. M. (Robert Harvey Monro) 1853- 11 books
- Overend, William Heysham 1851-1898 11 books
- Ditchfield, P. H. (Peter Hampson) 1854-1930 11 books
- Sayler, H. L. (Harry Lincoln) 1863-1913 11 books
- Garrett, Edmund H. (Edmund Henry) 1853-1929 11 books
- Lea, Henry Charles 1825-1909 10 books
- Russell, William Howard, Sir 1820-1907 10 books
- James, Helen M. (Helen Mary) 1863-1900 10 books
- Stanley, Henry M. (Henry Morton) 1841-1904 10 books
- Holmes, William Henry 1846-1933 10 books
- Crosland, T. W. H. (Thomas William Hodgson) 1865-1924 10 books
- Adams, W. H. Davenport (William Henry Davenport) 1828-1891 10 books
- Allard, H. J. (Hermann Jozef) 1830-1915 10 books
- Sanger, Margaret 1879-1966 10 books
- Brock, H. M. (Henry Matthew) 1875-1960 10 books
- Jacobs, Aletta H. (Aletta Henriette) 1854-1929 9 books
- Bunner, H. C. (Henry Cuyler) 1855-1896 9 books
- Wilkins, W. H. (William Henry) 1860-1905 9 books
