The family is still extant and has produced many good class and better racehorses

Colonel Byrd imported two mares, Express and Roxana, in utero, Express and Roxana producing several offspring for Colonel Byrd, although due to lack of stud records it is not possible to say which descend from each of them, only that their progeny were definitely out of either Express or Roxana

This "Colonel Byrd's Imported Mares" entry therefore represents Express and Roxana combined