Jack Callahan
Jack Callahan is credited as penciller on 42 issues, inker on 42 issues, writer on 40 issues, letterer on 6 issues and others in grailworth's catalog, 36 issues of them across 11 series we value.
Every issue
Action Comics (1938) 1 issue
Adventure Comics (1938) 3 issues
All Funny Comics (1943) 3 issues
Boy Commandos (1942) 3 issues
Buzzy (1944) 1 issue
Detective Comics (1937) 1 issue
Star Spangled Comics (1941) 1 issue
Superman (1939) 2 issues
World's Finest Comics (1941) 1 issue
Credits from the Grand Comics Database, CC BY-SA 4.0.