From the book "Worlds in Space"
by Martin Caidin
Though heated arguments still rage among rocket engineers, in their discussions of the future, as to whether or not colonies will be established on the moon, and how these colonies will be transported through space to the earth's satellite, the only elaborately detailed plan yet presented publicly on a scientific basis for this purpose is that advance by Dr. Wernher von Braun. He proposes three tremendous space ships weighing more than 4,300 tons each, merely for a six week stay on the moon in space ships similar to that pictured here."Five years have passed since February 24th, 1949, when a V-2 rocket soared upward at 5,100 miles per hour and set a new record at 252 miles above the earth's surface...[Worlds in Space] tells the history of rocket development thus far and reveals the steps by which man will eventually travel to other planets."

"A combination of proposals from both sides of the Atlantic. The space satellite depicted in its final stages of construction is the design proposal of von Braun, the space ships indicated a variation of a delta-wing suggestion by R. A. Smith of the British Interplanetary Society."