Milton, Wiscon­sin (June 1, 2008) Eques­tri­an Erica K. Frei adds the title Author to her talents with the release of her new book “Cen­tered Self, Centered Horse; A Simple Guide to Horse­man­ship.” Erica’s approach to hors­es is unique to the horse world and that is reflect­ed through the wise words in her latest book.