NASA planned to send human missions to the Moon through Apollo 20. Congressional cutbacks in NASA allocations accelerated the end.
Apollo 11, SpaceNext50
Are there any videos of Apollo astronauts taking off from Earth or
Apollo took us to the moon in 1969. Why haven't we gone back? - CNET
Why Didn't We Go Back to the Moon?, SpaceNext50
Why haven't humans been to the moon in the last 50 years?
Astronauts Explain Why Humans Haven't Returned to the Moon in Decades
Do any Apollo Mission astronauts have footage of Earth taken from
NASA wants astronauts to go back to the moon in 2024. Is it
Astronauts Explain Why Humans Haven't Returned to the Moon in Decades
Why it took the US 51 years to get back on the moon
Astronauts Explain Why Humans Haven't Returned to the Moon in Decades