So, what do you get? These:

"Call Me Joe" by Poul Anderson; "Who Goes There?" by John W. Campbell, jr. writing as Don A. Stuart; "Nerves" by Lester del Rey; "Universe" (which is part of the fix up novel Orphans of the Sky) by Robert A. Heinlein; "The Marching Morons" by C. M. Kornbluth; "Vintage Season" by Henry Kuttner & C. L. Moore writing as Lawrence O'Donnell; "And Then There Were None" by Eric Frank Russell; "The Ballad of Lost C'Mell" by Cordwainer Smith; "Baby Is Three" (part of the subsequent novel More Than Human) by Theodore Sturgeon; The Time Machine by H.G. Wells; "With Folded Hands..." (the first part of the novel The Humanoids) by Jack Williamson.

These are essential reading for anyone who considers themselves a fan. I've been reading SF since the mid 1960s and it was great to reacquaint myself with some old friends. If you haven't read these, then do yourself a favor and pick up this book, you won't regret it. And when Vol. Two B is reissued, don't bother waiting for a review, just buy it.

(One bibliographic detail... the book is shot from the original edition, even the copyright acknowledgments remain unchanged; even when the listed agents have died and their agencies are long gone!)