If you missed the last part…
Wollheim continued to edit Pulps and to supply stories when needed. When the Pulps died, he turned to writing Science Fiction novels for the Winston juvenile series and later others as David Grinnell. He wrote the Mike Mars series under his own name. He didn’t give up entirely on magazines, publishing the Avon Fantasy Reader in the 1940s and 50s. This small publication reprinted heavily from his favorite Pulps like Weird Tales. He experimented at Avon with 10 Fantasy Story (one issue) and Out of This World Adventures (half comic, half Pulp) (two issues). He published a long list of SF anthologies including Adventures in the Far Future (1954), Adventures on Other Planets (1955), The Earth in Peril (1957), Men On the Moon (1958), and Swordsmen in the Sky (1964).
In 1965, he exploded Fantasy publishing by releasing an unauthorized paperback of The Lord of the Rings. As top SF editor at ACE Books, he brought Edgar Rice Burroughs into the second half of the century. He took his influential status as an editor of SF and Fantasy and created his own paperback company, DAW Books in 1971. Many of the writers who published with Wollheim at ACE went over to DAW, including Andre Norton, C. J. Cherryh, Michael Moorcock, A. E. van Vogt, Lin Carter, E. C. Tubb and many others.
1948
“Keller and the Avon Fantasy Reader” (Fanomena, March 1948)
1950
“Pallas Rebellion” (Out of This World Adventures, July 1950) as W. Malcolm White
“Top Secret”(F&SF, Fall 1950) as David Grinnell
“The Space Lens” (reprinted in Fantastic Story Quarterly, Fall 1950) as Millard Verne Gordon
“Mimic” (reprinted in Fantastic Novels, September 1950)
“War of the Marsh-Men” (Out of This World Adventures, December 1950) as W. Malcolm White
1951
“Private World” (10 Story Fantasy, Spring 1951) as Martin Pearson
“Extending the Holdings” (F&SF, April 1951) as David Grinnell
“The Rag Thing” (F&SF, October 1951) as David Grinnell
1952
“Colt Cash Cache”
“Signpost in the Sky” (Science Fiction Quarterly, November 1952) as W. Malcolm White
“Malice Aforethought” (F&SF, November 1952) as David Grinnell
1953
“The Mask of Demeter” (F&SF, January 1953) with C. M. Kornbluth as Cecil Corwin and Martin Pearson
“Disguise” (Other Worlds, February 1953)
“Shoo, Fly!” (Science Fiction Quarterly, February 1953) as W. Malcolm White
“Go Fast on Interplane” (Dynamic Science Fiction, June 1953) with C. M. Kornbluth as Wallace Baird Halleck
“Road to Rome” (Future Science Fiction, July 1953) as David Grinnell
“No Greater Glory” (Dynamic Science Fiction, August 1953) as W. Malcolm White
“Asteroid 745: Mauritia” (Orbit #1, September 1953) as Martin Pearson
“Ganymede House” (Orbit #1, September 1953) as David Grinnell
“The Poetess and the 21 Grey-Haired Cadavers” (Dynamic Science Fiction, October 1953) as W. Malcolm White
1954
“Last Stand of a Space Grenadier” (Science Fiction Quarterly, February 1954) as David Grinnell
“The Lysenko Maze” (reprinted in F&SF, July 1954) as David Grinnell
1955
The Secret of the Martian Moons
1956
1957
“Observation Platform” (Saturn, October 1957)
1958
Edge of Time as David Grinnell
1959
The Martian Missile as David Grinnell
The Secret of the Ninth Planet
1960
“This Year and No Other” (Science Fiction Stories, May 1960)
1961
Destiny’s Orbit as David Grinnell
Mike Mars: Astronaut
Mike Mars Flies the X-15
Mike Mars at Cape Canaveral
Mike Mars in Orbit
1962
Mike Mars Flies the Dyna-Soar
Mike Mars: South Pole Spaceman
1963
Mike Mars and the Mystery Satellite
“Give Her Hell” (Manhood v1 #4, 1963) as David Grinnell
“The Hook”
“Babylon: 70 M.” (Magazine of Horror, August 1963)
“Doorslammer” (Magazine of Horror, November 1963)
1964
Mike Mars Around the Moon
“The Feminine Fraction” (Magazine of Horror, November 1964) as David Grinnell
1965
“The Garrison” (Magazine of Horror, April 1965)
1966
1967
Destination: Saturn as David Grinnell with Lin Carter
1969
“The Horror Out of Lovecraft” (Magazine of Horror, May 1969) as Donald Allen Wollheim
“An Advance Post in the War Between the Sexes”
“Santa Rides a Saucer”
“The Egg From Alpha Centauri”
“Web Sixty-Four”
1970
To Venus! To Venus! as David Grinnell
“Miss McWhortle’s Weird” (The Arkham Collector, Summer 1970)
1971
Fortress of the Six Moons with Forrest J. Ackerman as K. H. Scheer
The Galactic Riddle with Forrest J. Ackerman as Clark Darlton
The Ghost of Gol with Forrest J. Ackerman as Kurt Mahr
“Letter to The Bulletin of the Science Fiction Writers of America, November 1971”
1973
“The Rules of the Game” (New Writings in SF 22, April 1973)
1981
“Great Gog’s Grave” (Fantasy Book, December 1981) with Forrest J. Ackerman
1982
The Men from Ariel
“Ishkabab”
“The Lost Poe”
“Who’s There?”
1988
Up There and Other Strange Directions
Conclusion
Donald Allen Wollheim passed away on November 2, 1990 after a career that touched seven decades. DAW Books continues to publish paperback SF and Fantasy under DAW’s daughter, Elizabeth R. Wollheim and Sheila E. Gilbert.