Unwin fashioned a "highly competitive company with a reputation for discovering and marketing promising new authors".[2] The company published fiction series such as the Pseudonym Library and the Overseas Library through which promising new authors such as Joseph Conrad, John Galsworthy and W. Somerset Maugham could be "profitably marketed to a growing middle-class reading public"[2] in the 1890s. In the years 1895-1898 Unwin published Joseph Conrad’s first novel Almayer’s Folly and his An Outcast of the Islands and Tales of Unrest; in 1897 it published Maugham's first novel Liza of Lambeth.
T. Fisher Unwin employed a "skilful team"[6] including Edward Garnett as reader (who recommended Almayer’s Folly for publication) and David Rice as chief salesman.
During much of the company's first two decades T. Fisher Unwin's office was located at Paternoster Square, London[7] and in 1905 it relocated to 1 Adelphi Square, London (with a branch at Inselstrasse 20, Leipzig).[8]
Thomas Fisher Unwin's latterly more famous nephew Stanley Unwin started his career by working in his uncle's firm. In 1914 Stanley Unwin purchased a controlling interest in the firm George Allen and Sons, and established George Allen and Unwin, later to become Allen and Unwin.[9]
Unwin retired to his home in Sussex in 1926, following which his publishing house merged with Ernest Benn Limited.[1]
Julie F. Codell, "T. Fisher Unwin", in: Patricia J. Anderson and Jonathan Rose, eds., British Literary Publishing Houses, 1820-1880, Detroit and London: Gale Research Inc., 1991 (Dictionary of Literary Biography, vol. 106), pp. 304-311