This reference work gives a massive collection of facts, author birth and death dates (including writers from around the world, not just U.S./British), publication dates for major works, and lists upon lists upon lists of events. However, there are inconsistencies among the birth and death dates. Some are simply wrong, while others are internally inconsistent (that is, the same fact in two different parts of the book do not agree). But I can't think of another book that has this breadth of information.
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