They were:

1. Mercury-Redstone 3 (MR-3) - First successful launch of a Mercury capsule, carrying a chimpanzee named Ham.

2. Mercury-Redstone 4 (MR-4) - Unmanned test flight of a Mercury capsule.

3. Mercury-Atlas 6 (MA-6) - First crewed orbital flight, with John Glenn.

4. Mercury-Atlas 7 (MA-7) - Second crewed orbital flight, with Scott Carpenter.

5. Mercury-Atlas 8 (MA-8) - Third crewed orbital flight, with Gordon Cooper.

6. Mercury-Atlas 9 (MA-9) - Fourth crewed orbital flight, with Walter Schirra.

7. Mercury-Atlas 10 (MA-10) - Fifth crewed orbital flight, with Alan Shepard.