EA Factbook, P.19
"One by one the outer systems fell - Sinzar, Vega, Cyrus, Jericho"
Then Proxima gets a mention.
Earth deactivated the Io junmpgate, the Minbari skipped Mars and went straight for Earth, cue Alpha flight . . .
Galaxy guide,
The Jericho system is mentioned in the GG as being the base the Prometheus left from to go scout the Minbari. When they limmped home, they were followed, unfortunately for the EA base in orbit around the planet.
Just what I could find in a 5 min skim.
LBH