Doc Harker is a character created by Edwin Truett. He first appeared in the 1940 novel Crime Nest.
Crossover chronology[]
| Story | Publication | Crossovers |
| 1973-1974 - Greatheart Silver | Weird Heroes, Volume 1, 1975 | see Greatheart Silver |
| Information sourced from The Crossover Universe™ is © copyright 2010-2021 by Win Scott Eckert and Sean Levin. |