According to the editor this two-volume set from 1959, which includes four full-length novels, "is not a definitive anthology ... not a scholarly survey ... not, indeed, any kind of shaped or patterned anthology, but simply a very large collection of stories which are (I think) of high quality and (I hope) unfamiliar to many readers." Thus, along with a number of still-famous stories, there are a few that have never again been reprinted since and have languished into obscurity.
These volumes were ubiquitous for years, beginning 1960, as an introductory selection for members of the US Science Fiction Book Club (editions shown in the photo).
Boucher was a founding editor of The Magazine of Fantasy and Science Fiction, and produced annual The Best from Fantasy and Science Fiction anthologies from 1952 to 1959. These two volumes were his last anthologies.
A Treasury of Great Science Fiction, Vol. 1, (Doubleday, 1959)
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A Treasury of Great Science Fiction, Vol. 2, (Doubleday, 1959)
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