“Featuring rare and never-before-seen archival material revealing the extraordinary life’s work of Carter Cash and her iconic entertainment career, paired alongside one-of-a-kind interviews with the monumental woman herself, the film also includes sit-downs with her family, admirers and friends, including Dolly Parton, Reese Witherspoon and Willie Nelson, among many others.”
https://www.southernliving.com/june-carter-cash-documentary-trailer-8422808