"Slightly less scarce but equally interesting is the card-covered science fiction booklet illustrated by Ron Embleton entitled The World of Space, published by P.R. sometime during the 1950s. The cover and four internal pages are in colour while most of the other pages carry black and white spot illustrations. Running along the bottom edge of each page is a continuous strip, The Green Moon, recounting the adventures of Nick Ballard, and his assistants, Rock Murphy and Janice Carr. While not as difficult to find as The Space Patrol, The World of Space is still quite an elusive item..."