Foes in ’76, Friends in ’85.”  That’s what the posters said, advertising the 1885 tour of Buffalo Bill Cody”s Wild West Show with Guest Star Sitting Bull.  What brought the great former buffalo and Indian hunter and the greatest of the Chiefs of the Great Plains Indians together?  And how did the combination work out, and how did autographed pictures and souvenirs figure in?  Deanne Stillman, author of the new book Blood Brothers: The Strange Friendship of Buffalo Bill and Sitting Bull tells the story.