[RightOnline]

"Do they still have the spacesuits of the other astronauts that were with him on Mercury 7 or were they destroyed?"

Ummm...........that would be Apollo 1. Mercury missions had one crewmember, Gemini missions had two, Apollo had three. Grissom, White, and Chafee all died in the fire on the launchpad during preflight of Apollo 1.

[PAR35]

The "Mercury 7" was how they referred to the whole group. Each flight had a name, also ending in 7. Liberty Bell 7 (Grissom), Freedom 7 (Shepard), Friendship 7 (Glenn). There were 6 Mercury 7 flights.