Big Book of Science Fiction (var. 1) ed. Groff Conklin (Berkley, 1957, G53, 35¢, 187pp, pb, an, cover by Richard Powers)
Reprints 10 stories from the hc edition (Crown 1950).
The Classic Book of Science Fiction ed. Groff Conklin (Bonanza/Crown, 1978, 545pp, hc, an)
Reprint (Crown 1950 as Big Book of Science Fiction) anthology.
Crossroads in Time ed. Groff Conklin (Perma Books, 1953, P254, 35¢, 312pp, pb, an)