List of English-language 20th-century general encyclopedias

Tenth edition (supplement to the 9th) (1903)
11th edition of the Encyclopaedia Britannica (1910-1)
Twelfth edition (1922) a 3-volume supplement to the eleventh edition was released that summarized the developments just before, during and after World War I; these three volumes, taken together with the eleventh edition of 1910, became known as the twelfth edition.
These eventful years; the twentieth century in the making, as told by many of its makers; being the dramatic story of all that has happened throughout the world during the most momentous period in all history, (1924)
Thirteenth edition (1926) three new volumes covering the history of 1910–1926, which were intended to supplant those of the twelfth edition. Again taken together with the eleventh edition, the new volumes became known as the thirteenth edition.
Fourteenth edition (1929) after this the Britannica began a policy of continuous revision.
10 Eventful Years (1947) a special supplement on 1937-1947 - the Second World War, as well as the years immediately preceding it and following it.
Fifteenth edition, first version, other wise known as the New Encyclopædia Britannica (1974) this began the change of format into Propædia, Micropædia, and Macropædia, as well as eschewing an index.
Fifteenth edition, second version (1985) restored the index as a two volume supplement, streamlined the three type format for easier use.
Encyclopædia Britannica Ultimate Reference Suite (2004)
Britannica Global Edition (2010)

Other English language Britannica publications edit

The Historians' History of the World (1902)
The reader's guide to the Encyclopædia britannica; a handbook containing sixty-six courses of systematic study or occasional reading. (1913)
Britannica Book of the Year (1913, 1938-)
The Britannica book of the war (1914)
Britannica Home University (1920)
Weedon's Modern Encyclopedia (1931) a non-Britannica publication that was bought out and repackaged by Britannica as
- Britannica Junior (1934)
Great Books of the Western World (1952)
Children's Britannica (1960) aimed at ages seven to 14.
Gateway to the Great Books (1963)
Young Children's Encyclopaedia (1970) for children just learning to read
My First Britannica (1974) aimed at children ages six to 12
Britannica Discovery Library (1974) for children aged three to six

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