Their names, at least those who were taken on the U.S. tour with Balto (five were not...there were twelve total team members...only seven made the U.S. tour), are:
Sye, Fox, Old Moctoc, Tillie, Billy, and Alaska Slim
Here's a little info on (most of) them:
Fox was noted as the "second in command" of the team...the co-leader (after Balto). Gunnar Kaasen, the team's musher, was under instructions from Leonhard Seppala (his boss, mentor and the owner of the dogs) to NOT use Balto as a lead dog on the twelve-member team. Sepp wanted Kaasen to use Fox, a dog with more experience. In the picture below, Fox is the dog on the left. Next to him is Gunnar Kaasen and Balto, and then an unidentified man and another member of the team (which could be any of the other members of the team save for Old Moctoc. Why is explained below)
Sye was the youngest member of the team, and the last of the seven members to pass into eternity after Balto (he died a year after Balto did, in 1934...lonely and despondent, but well-cared for). Rumor has it that he was the only member of the team to breed. There is a reference to his escaping from the enclosure at the Cleveland Brookside Zoo (now the Cleveland Metroparks Zoo), and impregnating a German Shepherd dog...a police dog apparently. Heh heh...
Old Moctoc was the oldest member of the team, and was said to look so much like a wolf that he sometimes scared people who were not accustomed to him...especially the citizens of the United States who saw him with the team during the U.S. tour, and in the zoo.
Tillie was the only female in the entire group.
I don't really have anything of note on Billy or Alaska Slim. However, here are some photos of the team, taken shortly (or just) after the Great Serum Run:
