Supporting Cast:
 

Guests:
Doc Savage (not from the Marvel Universe)
 

Villains:
1st Tarros

Part 1 - "The Yesterday Connection!" - 5 Pgs
Part 2 - "The Secret Out Of Time!" - 5 Pgs
Part 3 - "Tomorrow Is Too Late!" - 8 Pgs
Part 4 - "Other People Other Times!" - 8 Pgs
Part 5 - "The Future Is Now!" - 7 Pgs

Also: 19 Other Pages as described below

Writer - Gerry Conway
Artist - Ross Andru
Inking - Mike Esposito
Cover - Gil Kane
Lettering - Ray Holloway
Colorist - George Roussos
Editor - Roy Thomas