An hour-long segment of the forthcoming PBS series The Appalachians: America's First and Last Frontier will be shown Nov. 6 at the American Conservation Film Festival in Shepherdstown, W.Va. The series, which features folk, country and bluegrass music, examines the cultural, economic and political significance of the people living in the Appalachian Mountains. One of Johnny Cash's final interviews is a prominent part of the project, according to its executive producer, Mari-Lynn C. Evans. The entire series of three one-hour segments will debut on Nashville's PBS station, WNPT, next spring. Naomi Judd, a native of the Appalachian river town of Ashland, Ky., introduces the film. She and Marty Stuart have both taped spots to promote it. In addition, the two country music stars have created children's segments related to the series to air on PBS. Nashville's Dualtone Records will release the soundtrack album early in 2005. A companion book, also titled The Appalachians: America's First and Last Frontier, was published this year. A DVD of the series, possibly with additional footage, will be available, Evans says.