Superman was created by writer Jerry Siegel and artist Joe Shuster.
Action Comics #1 (June 1938)
Batman was created by artist Bob Kane and writer Bill Finger
Detective Comics #27 (May 1939)
Created by writer Bill Finger and artist Martin Nodell
All-American Comics #16 (July 1940)
Conceived by editor Sheldon Mayer and writer Gardner Fox
All Star Comics #3 (Winter 1940)
Created by A William Moulton Marston.
All Star Comics #8 in December 1941
Created by writers Robert Kanigher and John Broome and penciler Carmine Infantino
Showcase #4 (Oct. 1956)
Writer Gardner Fox and artist Mike Sekowsky
The Brave and the Bold #28 (February/March 1960)