Portal:Reference works
General encyclopedias
- The American Cyclopædia (1879)
- The New International Encyclopædia (1905)
- The Nuttall Encyclopædia (1907)
- The Encyclopedia Americana (1906)
- The Encyclopedia Americana (1920)
- Collier's New Encyclopedia (1921)
Encyclopædia Britannica
- Encyclopædia Britannica, Ninth Edition (1875–1889)
- 1902 Encyclopædia Britannica (10th ed., supplement to the 9th)
- 1911 Encyclopædia Britannica
- 1922 Encyclopædia Britannica
Literature
- Literary Research Guide (2017)
Places
Biography
See also: Portal:Biography
- A Biographical Dictionary of Ancient, Medieval, and Modern Freethinkers (1945)
- A biographical dictionary of eminent Scotsmen (1857)
- Appletons' Cyclopædia of American Biography (1888-1900)
- Biographies of Scientific Men (1912)
- The Cyclopædia of American Biography (1918)
- The Dictionary of Australasian Biography (1892)
- Dictionary of Christian Biography and Literature to the End of the Sixth Century (1911)
- Dictionary of Greek and Roman Biography and Mythology (1870)
- Dictionary of National Biography, 1885-1900 (1885)
- The Indian Biographical Dictionary (1915) (1915)
Young people
Religion
Music
History
Botany
Classification
About
- "Cyclopædia," in Collier's New Encyclopedia, New York: P. F. Collier & Son Co. (1921)
- "Encyclopædia," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
- "Encyclopædia," in The New Student's Reference Work, Chicago: F.E. Compton and Co. (1914)
- "Encyclopaedia," in Encyclopædia Britannica (11th ed., 1911)
- "Encyclopædia," in The Nuttall Encyclopædia, (ed.) by James Wood, London: Frederick Warne and Co., Ltd. (1907)
- "Encyclopædia," in The New International Encyclopædia, New York: Dodd, Mead and Co. (1905)
- "Cyclopædia," in The American Cyclopædia (1879)