Anthologies
FOREIGN LEGIONS, A Ranks of Bronze shared
universe; Baen, 2001
DOGS OF WAR, Warners, 2002
STARHUNTERS SERIES:
Anthologies
FOREIGN LEGIONS, A Ranks of Bronze shared
universe; Baen, 2001
DOGS OF WAR, Warners, 2002
STARHUNTERS SERIES:
KIPLING AND KIPLING-INSPIRED SF AND FANTASY (with Sandra Miesel):
A SEPARATE STAR; Baen, 1989
HEADS TO THE STORM; Baen, 1989
THE ROBERT E HOWARD LIBRARY
NOTE: I edited these volumes of Robert E Howard stories but I chose to be listed as editor only on the first volume which wasn't, strictly speaking, part of the series. (The series was a later idea which sprang from the success of the first volume.)
I'm occasionally asked why I didn't reprint Almuric. First, because it's a terrible book.
Second, I don't believe it was written by Howard. Supposedly the manuscript turned up in the office of Howard's agent, Otis Adelbert Kline, after Howard's death. Kline then sent the novel to Weird Tales, which published it. As the Burroughsian SF novel (sword-and-planet) was precisely the sort of thing Kline himself had made a career writing but differs from anything else Howard himself wrote, I strongly suspect the mss was first found, page by page, in Kline's own typewriter.
CTHULHU: The Mythos and Kindred Horrors; Baen,
1987
CORMAC MAC ART; Baen, 1995
KULL; Baen, 1995
SOLOMON KANE; Baen, 1995
BRAN MAK MORN; Baen, 1996
EONS OF THE NIGHT; Baen, 1996
TRAILS IN DARKNESS; Baen, 1996
BEYOND THE BORDERS; Baen, 1996
ANTHOLOGIES EDITED WITH MARTIN HARRY GREENBERG (who is not always listed)
SPACE GLADIATORS (with Charles G Waugh); Ace,
1989 
SPACE INFANTRY (with Charles G Waugh); Ace, 1989
SPACE DREADNOUGHTS (with Charles G Waugh); Ace, 1990
THE ETERNAL CITY (with Charles G Waugh); Baen, 1990
ARMAGEDDON (with Billie Sue Mosiman); Baen, 1998
A CENTURY OF HORROR; MJF Books, 1996
ANTHOLOGIES EDITED WITH BILL FAWCETT
Fleet Series
THE FLEET; Ace, 1988
COUNTER ATTACK; Ace, 1988
BREAK THROUGH; Ace, 1989
SWORN ALLIES; Ace, 1990
TOTAL WAR; Ace, 1990
CRISIS; Ace, 1991
Battlestation Series
BATTLESTATION; Ace, 1992
VANGUARD; Ace, 1992