The Ninety-Nines organization came into being November 2, 1929, at Curtiss Field, Valley Stream, Long Island, New York. All 117 American female pilots had been invited to assemble for mutual support and the advancement of aviation. Louise Thaden was elected secretary and worked tirelessly to keep the group together as we struggled to organize and grow until 1931, when Amelia Earhart was elected as first president and the group was named for the 99charter members. 

The Tucson Chapter has a great history as well...

Formed  in the summer of 1951 with 5 members.

1958 Airlift

1964 Pennies a Pound

1977 Powder Puff Derby

2005 Dime A Pound