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| A GT-6 launch cover featuring the "KSC Officials" stamped cachet, postmarked at Kennedy Space Center with a machine cancel on October 25, 1965. The mission was later cancelled due to a technical failure during the Agena rocket launch. |
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| A GT-6 launch cover from "Harry Gordon", featuring the "KSC Officials" stamped cachet, postmarked at Kennedy Space Center with a machine cancel on October 25, 1965. |
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| Photo: Thomas Stafford adjusting Walter Schirra's space suit during training on October 23, 1965. |
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| Photo: The interior of the Gemini 6 spacecraft. |
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| Photo: An illustration of a series of Gemini 6 and Agena docking maneuvers. |
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| Photo: The Agena rocket for Gemini 6 to rendezvous in space, exploded in the sky shortly after launch. |
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| A GT-6 launch cover from "Astro Covers", postmarked at Cape Canaveral with a machine cancel on October 25, 1965. |
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| A GT-6 launch cover featuring a "COASTAL CRUSADER" cachet, postmarked at Cape Canaveral with a machine cancel on October 25, 1965, with a "PM" time slug. |
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| Photo: Backup pilots of Gemini 6, Gus Grissom and John Young, wear "out of service" card on their suit, after the Agena rocket failed to launch. |
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| A GT-6 recovery cover created using ship’s stationery from the USS Wasp, featuring a black “USS Wasp” stamped cachet and a magenta “Morris Beck” rubber-stamped cachet, postmarked with a rare hand cancel on October 25, 1965. The USS Wasp was designated as the recovery ship for the Gemini 6 mission, which was scrubbed on October 25, 1965. |
