It's no secret life was difficult for African Americans living in Minnesota at the turn of the century. We learn why from a new Minnesota History Center exhibit. Minneapolis playwright Kim Hines tells the story of three prominent African American women of the time who are largely unknown to most Minnesotans. Hines has written monologues portraying the life of businesswoman Amanda Lyle, social worker Gertrude Brown and attorney Lena Smith. The monologues are being performed at the History Center. Minnesota Public Radio's Dan Olson has more. audio . . . music track 9 Satchmo Lena Smith was Minnesota's first African American woman lawyer. The Kansas native moved to Minnesota in the early '20's. She