Dr. Lillian Gilbreth invented the pedal trash and the electric mixer.
She was a pioneering efficiency expert and, incidentally, was also the mother in the book Cheaper by the Dozen, written by two of her 12 children.
Karen Hill
Dr. Lillian Gilbreth invented the pedal trash and the electric mixer.
She was a pioneering efficiency expert and, incidentally, was also the mother in the book Cheaper by the Dozen, written by two of her 12 children.
