To be clear, I'm not including encounters where one side was unaware, like Guinan, Spock, or Dax on Earth in past centuries, or mass abductions like in "North Star" or "The 37's".
There was an 88 year gap between Cochrane's flight and the launch of the NX-01. It's safe to say the United Earth government was unaware of most of the major Alpha and Beta Quadrant powers at the time like the Klingons, Andorians, Tellarites, Cardassians, Tholians, and certainly Romulans.
Human interstellar travel was very limited (mainly by cargo ships). Travis specifically mentioned the Horizon encountering both Deltans and Nauciaan pirates, though the NX-01 crew was apparently unfamiliar with both, so contact (if any) by either races' government with Earth itself was probably very limited.
Nathan Samuels mentioned losing his father in a freighter accident at age 18 and initially blaming the Denobulan pilot. Given that the script suggests he was in his 60's, we can safely say Denobulans have been visiting Earth since at least the 2110's. They may have even been the second race, after the Vulcans, that Humans made contact with.
Also, since both races are members of the Interspecies Medical Exchange by the 2150's, presumably other races (including the Mazarites) have had dealings with Earth. Since one conference took place on Tiburon, humans had probably met them, as well
Did I miss anything?
There was an 88 year gap between Cochrane's flight and the launch of the NX-01. It's safe to say the United Earth government was unaware of most of the major Alpha and Beta Quadrant powers at the time like the Klingons, Andorians, Tellarites, Cardassians, Tholians, and certainly Romulans.
Human interstellar travel was very limited (mainly by cargo ships). Travis specifically mentioned the Horizon encountering both Deltans and Nauciaan pirates, though the NX-01 crew was apparently unfamiliar with both, so contact (if any) by either races' government with Earth itself was probably very limited.
Nathan Samuels mentioned losing his father in a freighter accident at age 18 and initially blaming the Denobulan pilot. Given that the script suggests he was in his 60's, we can safely say Denobulans have been visiting Earth since at least the 2110's. They may have even been the second race, after the Vulcans, that Humans made contact with.
Also, since both races are members of the Interspecies Medical Exchange by the 2150's, presumably other races (including the Mazarites) have had dealings with Earth. Since one conference took place on Tiburon, humans had probably met them, as well
Did I miss anything?
