Before there was Shirley Temple or Judy Garland or Fanny Brice, before musical comedy even existed as a genre, Maggie Mitchell (1836-1918) consistently drew sold-out crowds for four decades as a musical comedy star. Admired by Abraham Lincoln as well as John Wilkes Booth, along with millions of adoring fans, both female and male, Maggie blazed across the American stage, her energy unstoppable in her signature roles: Fanchon, Little Barefoot, Pearl...