Studied in 1959, the Saturn B-1, was a four-stage concept rocket similar to the
Jupiter-C, and consisted of a
Saturn IB first stage, a cluster of four
Titan I first stages used for a second stage, a
S-IV third stage and a
Centaur high-energy liquid-fueled fourth stage. Like its proposed predecessors, the Saturn B-1 never flew and neither did the Titan cluster stage. The
S-IV however flew on the
Saturn I.
Koelle, Heinz Hermann, Handbook of Astronautical Engineering, McGraw-Hill,New York, 1961. The only such comprehensive handbook ever produced, and at the dawn of the space age.
Bilstein, Roger E, Stages to Saturn, US Government Printing Office, 1980.
ISBN0-16-048909-1. Excellent account of the evolution, design, and development of the Saturn launch vehicles.