| August Derleth
The Outer Reaches
| | Pellegrini And Cudahy USA | Oct 1951 | Hardcover | 1 | | |
| August Derleth
Beachheads In Space
| | Berkley USA | 1957 | Paperback | 1 | | |
| August Derleth
Beyond Time And Space
| | Berkley USA | Feb 1958 | Paperback | 2 | | |
| August Derleth
The Outer Reaches
| | Berkley USA | Apr 1958 | Paperback | 1 | | |
| August Derleth
Strange Ports Of Call
| | Berkley USA | Jun 1958 | Paperback | 1 | | |
| August Derleth
Worlds Of Tomorrow
| | Berkley USA | Oct 1958 | Paperback | 1 | | |
| August Derleth
Time To Come
| | Berkley USA | Dec 1958 | Paperback | 1 | | |
| August Derleth
The Other Side Of The Moon
| | Berkley USA | Jun 1959 | Paperback | 1 | | |
| August Derleth
The Mask Of Cthulhu
| | Consul UK | 1961 | Paperback | 0 | | |
| August Derleth
Not Long For This World
| | Ballantine Books USA | 1961 | Paperback | 1 | | |
| August Derleth
Worlds Of Tomorrow
| | Four Square UK | 1963 | Paperback | 1 | | |
| August Derleth
New Worlds For Old
| | Four Square UK | 1963 | Paperback | 2 | | |
| August Derleth
The Sleeping And The Dead
| | Four Square UK | 1963 | Paperback | 1 | | |
| August Derleth
Dark Mind, Dark Heart
| | Mayflower UK | 1963 | Paperback | 1 | | |
| August Derleth
Time To Come
| | Consul UK | 1963 | Paperback | 2 | | |
| August Derleth
The Outer Reaches
| | Consul UK | 1963 | Paperback | 2 | | |
| August Derleth
The Time Of Infinity
| | Consul UK | 1963 | Paperback | 3 | | |
| August Derleth
The Other Side Of The Moon
| | Panther UK | 1963 | Paperback | 1 | | |
| August Derleth
Beachheads In Space
| | Four Square UK | 1964 | Paperback | 1 | | |
| August Derleth
From Other Worlds
| | Four Square UK | 1964 | Paperback | 2 | | |
| August Derleth
The Unquiet Grave
| | Four Square UK | 1964 | Paperback | 1 | | |
| August Derleth
Mr. George And Other Odd Persons
| | Belmont USA | Jul 1964 | Paperback | 2 | | |
| August Derleth
Sleep No More
| | Panther UK | Dec 1964 | Paperback | 2 | | |
| August Derleth
Who Knocks?
| | Panther UK | Dec 1964 | Paperback | 1 | | |
| August Derleth
Night's Yawning Peal
| | Consul UK | 1965 | Paperback | 1 | | |