Joyce Elizabeth Harper was 32 when she was last seen on January 1, 1975, in Potrero, California. She is 5 feet 3 inches, about 120 pounds, with brown hair and brown eyes. She used aliases Joyce Gann and Vivian Ann Maddux.

Despite disappearing in 1975, Harper was not officially reported missing until December 15, 1995, when her daughter filed the report. That same daughter, Kimberly Cozart, vanished from Julian, California, in 1977 at age teenage; both disappearances remain unsolved and investigators have not established whether the cases are linked.

Very little else is publicly known about Joyce’s movements or contacts around the time she was last seen. Does anyone have memories, documents, or leads about Joyce Harper, Joyce Gann, or Vivian Ann Maddux from the Potrero or Julian areas?