Harold Vance
Harold Vance is credited as writer on 4 issues and penciller on 1 issue in grailworth's catalog, 4 issues of them across 2 series we value. Characters first seen in issues they wrote or drew include Wonder Man, "Spark" Stevens, Dr. Fung and Patty O'Day.
Characters they introduced
Every issue
Wonder Comics (1939) 1 issue
Wonderworld Comics (1939) 3 issues
Credits from the Grand Comics Database, CC BY-SA 4.0.