What was Ruth Handler's career like?

This link has a great deal of information about Handler.

oasis.lib.harvard.edu/oasis/deliver/~sch00324

Ruth Handler was born November 4,1916. Ruth Handler invented the 19th century first ever Barbie doll. Barbie was invented in 1959, with its release December 1959. Ruth Handler was 43 yrs old.

Toy furniture for 10-inch dolls in the 1950s

According to research, she never sold her share in the Mattel company. The family are still stockholders in the company and the Handers never sold out. Ruth stepped down from management, but never sold her holdings.