Secret Six
(1968-1969)
The Mystery of Mockingbird
- Secret Six Volume 1 #1
- Secret Six Volume 1 #2
- Secret Six Volume 1 #3
Dangerous Missions and Deadly Secrets
- Secret Six Volume 1 #4
- Secret Six Volume 1 #5
- Secret Six Volume 1 #6
- Secret Six Volume 1 #7
(1968-1969)