March 1949
From The Space Library
Concept of launching of small high-performance rockets suspended from a balloon above most of the atmosphere (later called "Rockoons"), developed by Cmdr. Lee Lewis, Cmdr. G. Halvorson, S. F. Singer, and James A. Van Allen during Aerobee firing cruise of U.S.S. Norton Sound.
“Operation Eclipse: 1948” article appears in National Geographic Magazine