Sep 11 1958

From The Space Library

A letter contract was signed by NASA with NAA's Rocketdyne Division for the development of the H-1 rocket engine, designed for use in a clustered-engine booster.

MSFC Saturn Systems Office and MSFC Historical Office, Saturn Illustrated Chronology (George C. Marshall Space Flight Center, MHR-3, 1964), pp. 2-3.