A is for Altair system.
B is for Bolius. Best barbers in the Alpha Quadrant.
C is for Cestus Comets, a late 24th century baseball revival team.
D is for Data. The android that has a cat.
E is for Excelsior-class starship. The Great Experiment. The class was still in widespread use almost an entire century after the first vessel was launched.
F is for the fabulous Ferengi. Greed is good indeed.