Best known as the inventor of the Barbie doll, Ruth Mosko Handler combined her marketing genius with her husband Elliot Handler’s creative designs to form the toy company Mattel, Inc., in 1939. Her battles with cancer later in her career led her to create the company Nearly Me, which developed prosthetics for breast cancer survivors.

By founding the Walden School and creating her own system of education based on principles of psychoanalysis, Margaret Naumburg laid the groundwork for the new discipline of art therapy. Naumburg also authored many works on psychology and art therapy.