An introduction and five early stories by this classic sci-fi writer from the 1930's originally published in the 1930's under the name John Beynon Harris. The title story plus Derelict of Space, Child of Power, The Last Lunarians and The Puff-ball Menace (which is an earlier try out of the storyline for 'The Day of the Triffids').
Similar books by other authors
The Outward Urge
Used availability for John Wyndham's Wanderers of Time
April 1980 : UK Hardback
September 1987 : UK Paperback
1973 : UK Mass Market Paperback