Marsha Hunt...in da house. Some background...Marsha is AA, not immediately biracial, and I don't believe she's had a relaxer during most of her life. It's all hers and ironically she's always had longer hair than her biracial daugther Karis Hunt Jagger. I have a unscanned offline pics of her that show her hair far longer than these. If she was fully straightened at her longest, she'd be between butt-mid-thigh length from what I guestimate.
Famous pic of her in 1968: