All Our Yesterdays

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All Our Yesterdays by Harry Warner, Jr., is a history of science fiction fandom of the 1940s, an essential reference work in the field.
It was originally published by Advent in 1969; the members of the World Science Fiction Society voted its author the Hugo Award for Best Fan Writer that year. NESFA Press produced a new edition with additional photographs, in 2004, after Warner's death.
Warner also wrote a related series of historical columns called "All Our Yesterdays." He later published a sequel, A Wealth of Fable, covering the 1950s, originally produced in a three-volume mimeographed edition, the first volume issued in 1976, and later expanded into hardcover form by SCIFI Press in 1992.