The Legion of Space

US original and the true first book edition; the census claim is correct. It was preceded only by the magazine serial in Astounding Stories (1934), which the book text follows. There is no early competing British edition — the first British publication is a Sphere paperback in 1977, thirty years later — so no UK-vs-US precedence question arises. Williamson was a Portales, New Mexico author, and this was his first appearance between hard covers.