Harold M. Agnew - Manhattan Project Scientist - Autographed 509th Composite Group Cover
Updated August 6, 2026
| Lot number | 0410 |
| Estimate | $50 - $75 |
| Opening bid | $25 |
| Auction | AMERICA'S STORY: 250TH ANNIVERSARY (PART I) |
| Date | August 11, 2026 at 12:00 PM EDT |
| Auction house | JG Autographs |
| Location | Danvers, Massachusetts |
Details: Harold M. Agnew autographed commemorative cover honoring the 509th Composite Group, signed in black ink. Agnew was a Manhattan Project physicist who helped construct Chicago Pile-1 under the
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