He created DC Comics' Black Lighting and co-created Marvel Comics' Misty Knight, characters that have appeared on TV. He is the author of 1000 Comics You Must Read and a long-time contributing editor to Comics Buyer’s Guide. He also contributed to Harlan Ellison's Dream Corridor Quarterly, and his run on Captain America followed that of fellow Star Trek writer John Warner.
Star Trek Bibliography
- DC Comics (First TOS series)
- Wildstorm Comics
- Pocket Books
- DC Comics (TNG series)
- Letter in the letter column for "Wolf on the Prowl" (1986)
- Introduction, Gold Key Archives, Volume 1 (2014)