Ruth Handler Club children's television show, Mattel invested heavily in television advertising. The TV commercials for the Barbie doll paid off and Barbie rocketed Mattel and the Handlers to fame and fortune. Subsequently, they would add a boyfriend for Barbie named Ken, after the Handlers' son, and many other "friends and family" to Barbie's world. Handler was diagnosed with breast cancer in 1970. She had a modified radical mastectomy, which was often used at the time to combat the disease, and because of difficulties in finding a good breast prosthesis, she decided to make her own. Handler went on to found a
Carole E. Handler 1998, Handler took on the case of Holocaust rescuer (Righteous Gentile) Irene Gut Opdyke when Opdyke tried to re-gain the rights to tell the "authorized" account of her life story, which she had previously assigned in a lawful motion picture option agreement. Handler worked with the parties to reach an agreement and the case was dismissed with prejudice. In an ironic twist, after the trial, all parties agreed that the promoter did "nothing wrong." Opdyke publicly acknowledged the promoter who she sued by thanking him in her book, “In My Hands” and agreed to give him a producer credit for