Don C. Cameron
Don C. Cameron is credited as writer on 302 issues, inker on 5 issues, penciller on 4 issues and cover artist on 1 issue in grailworth's catalog, 287 issues of them across 20 series we value. Characters first seen in issues they wrote or drew include Liberty Belle, Libby Lawrence, Alfred Beagle and Clark Kent.
Characters they introduced
Every issue
Action Comics (1938) 23 issues
Adventure Comics (1938) 42 issues
All-American Comics (1939) 1 issue
Batman (1940) 29 issues
The Best of DC (1979) 2 issues
Boy Commandos (1942) 4 issues
DC Special (1968) 1 issue
DC Super Stars (1976) 1 issue
Detective Comics (1937) 42 issues
Flash (1959) 1 issue
Land of the Lost Comics (1946) 1 issue
Star Spangled Comics (1941) 45 issues
Superboy (1949) 1 issue
Superman (1939) 26 issues
Credits from the Grand Comics Database, CC BY-SA 4.0.