Detective Comics (1937-) #27

The very first appearance of the Bat-Man in the six-page story "The Case of the Criminal Syndicate!" This issue also features the first appearances of Commissioner Gordon and the revelation of the Bat-Man's secret identity as Bruce Wayne.

Written By:
Bill Finger, Paul Gustavson, Jerry Siegel, Russell Cole, Gardner Fox, Sven Elven, Tommy Hickey, Sax Rohmer, Jim Chambers, Charles Biro
Pencils:
Paul Gustavson, Bob Kane, Homer Fleming, Fred Guardineer, Russell Cole, Joe Shuster, Sven Elven, Tommy Hickey, Jim Chambers, Charles Biro, Lee O'Mealia
Inks:
Paul Gustavson, Bob Kane, Homer Fleming, Fred Guardineer, Russell Cole, Joe Shuster, Sven Elven, Tommy Hickey, Jim Chambers, Charles Biro, Lee O'Mealia
Cover By:
Bob Kane