That's Bertha Boronda in the lower left square. I'm not sure if her proud look reflects her satisfaction of having the biggest hat or successfully cut off her unfaithful husband's penis with a straight razor in 1908.

Female inmates of San Quentin State Prison and their very fine hats

http://feeds.boingboing.net/~r/boingboing/iBag/~3/5U8NNkyPK60/fabulous-hats-of-san-quentin-s.html