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Contents (view Concise Listing)
- The Mightiest Machine • [Mightiest Machine] • novel by John W. Campbell, Jr.
- The Mightiest Machine • interior artwork by Robert Pailthorpe
Primary Verifications
| Verifier | Date | Type | Last User Activity Date |
|---|---|---|---|
| Markwood | 2012-12-28 01:17:30 | Permanent | 2022-09-11 |
Secondary Verifications
| Source | Status | Verifier | Date |
|---|---|---|---|
| Bleiler Early Years | N/A | Rtrace | 2019-05-01 21:27:24 |
| Bleiler Supernatural | N/A | Rtrace | 2019-05-01 21:27:24 |
| Bleiler1 (Gernsback) | Verified | Rtrace | 2019-05-01 21:27:24 |
| Bleiler78 | Verified | Rtrace | 2015-06-16 19:02:46 |
| Clute/Grant | N/A | Rtrace | 2015-06-16 19:02:46 |
| Clute/Nicholls | Verified | Rtrace | 2015-06-16 19:02:46 |
| Contento1 (anth/coll) | N/A | Bluesman | 2009-03-17 13:26:03 |
| Currey | Verified | Bluesman | 2009-03-17 13:26:03 |
| Locus1 | N/A | Bluesman | 2009-03-17 13:26:03 |
| Miller/Contento | N/A | Bluesman | 2009-03-17 13:26:03 |
| OCLC/Worldcat | Verified | Bluesman | 2009-06-28 17:11:44 |
| Reginald1 | Verified | Rtrace | 2015-06-16 19:02:46 |
| Reginald3 | N/A | Rtrace | 2015-06-16 19:02:46 |
| Tuck | Verified | Mhhutchins | 2009-07-04 10:38:15 |

