| Author | E. E. 'Doc' Smith |
| Publisher | Pyramid Books, Pyramid Publications, Inc. |
| Series | Skylark |
| Format | Paperback |
| Language | English |
| Location | New York |
| Copyright | 1928 |
| Copyright Renewed | 1958-05 |
| Second Impression | 1962-08 |
| This Impression | 1968-01 |
| Pages / Font | 157 pages |
| Issue Number | X-1350 |
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