Mary Jane Croft was an American actress best known for her role as Betty Jo Bradley on the popular television series Petticoat Junction. Born on February 15, 1916, in Los Angeles, California, she began her career in the entertainment industry during the 1940s and appeared in various films and television shows. In addition to her work on Petticoat Junction, Croft made guest appearances on several other television series, including The Andy Griffith Show and The Dick Van Dyke Show. Her contributions to television earned her recognition and a loyal fan base throughout her career, which spanned several decades until her retirement.