 |
| GT-9 failed to launch on June 1, 1966 due to equipment problems and was further postponed. Above GT-9 cover from "Centennial" featuring a Cape Canaveral (AM time slug) hand cancellation dated June 1, 1966. |
 |
| Photo: Eugene Cernan and Thomas Stafford moved away from their Titan rocket at Cape Kennedy after the Gemini 9 mission was postponed because of last-minute equipment problems. |
 |
| A GT-9 cover featuring a hand cancellation from Cape Canaveral (PM time slug) dated June 1, 1966. |
 |
| A GT-9 cover from "Sarzin" canceled with a machine postmark at Patrick Air Force Base on June 1, 1966. |
