Early del Rey by Lester del Rey (Doubleday, February 1975, 0-385-02740-0, $7.95, 424pp, hc, co, cover by Peter Rauch)
There is lengthy, untitled, biographical material between the stories.
421 · Appendix: The Fantasy and Science Fiction of the Early Years · [uncredited] · bi [Ref. Lester del Rey]
The Early del Rey Volume 1 by Lester del Rey (Ballantine, August 1976, 0-345-25063-X, $1.95, 337pp, pb, co, cover by Greg & Tim Hildebrandt)
Reprints the first 12 stories from Early del Rey (Doubleday, 1975).
The Early del Rey Volume 2 by Lester del Rey (Ballantine, September 1976, 0-345-25111-3, $1.95, 335pp, pb, co, cover by Greg & Tim Hildebrandt)
Reprints the second 12 stories from Early del Rey (Doubleday, 1975).
Gods and Golems: Five Short Novels of Science Fiction by Lester del Rey (Ballantine, February 1973, 0-345-03087-7, $1.25, 246pp, pb, co, cover by Jacques Wyrs)
Masters of Science Fiction, Volume 7: Lester del Rey: “The Band Played On” and Other Stories by Lester del Rey (Armchair Fiction, January 30, 2013, 978-1-61287-136-3, $16.95, 320pp, tp, co, cover by Milton Luros from Future Science Fiction May 1952)
Details taken from Table of Contents.