Orbital Space Vehicles for Interplanetary Flight: Summaries of Some of the Papers read at the Second International Congress on Astronautics held in London by the British Interplanetary Society on September 3–8, 1951 Available to Purchase

A stage has now been reached in the development of rocket propulsion where, with moderate advances in technique, it becomes possible to produce a manned satellite vehicle and later to proceed to interplanetary flight. It is, in fact, evident that some work is already in progress to develop the satellite vehicle for military purposes, but exclusive military exploitation of space‐flight would be deplorable and it is desirable that a project, for purely scientific purposes, should come into being under a civilian authority.