María Izquierdo ( 1906 - 1955 ) was a Mexican painter, known for being the first Mexican woman to have her artwork exhibited in the United States. María Izquierdo s works have been put up for auction numerous times, with realized prices greatly surpassing estimated prices, varying from 18000 USD for Mujeres en la carcel in 2003 to a remarkable record 145000 USD for CABALLOS EN EL RIO in 2007 , b