| Source | No. of occurrences |
| Unabomber Trial .com | 72 |
| Michigan University Archive | 45 |
| California University Archive | 41 |
| Patreon | 41 |
| Yahoo News | 39 |
| Fitch & Madison | 36 |
| YouTube | 31 |
| Archive.org | 30 |
| 325 | 25 |
| LibCom | 19 |
| CrimethInc. | 12 |
| Other | 447 |
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