C.O.W.L. 1964 by Alec Siegel

It's 1964, and C.O.W.L.-the world's first superhero labor union-is going national! But powerful forces move in the shadows-and as the sins of the past come back to haunt them, everything COWL has built threatens to come crashing down around them. Collects C.O.W.L. 1964 #1-4.
Binding: Paperback / softback