Dr. Ramiro Contreras on Instagram: "Esther Tafolla In 1912, Esther was hired as the first female teacher of Mexican descent in Houston. She was also one of the first Mexicanas to vote in Houston. Diana Gonzalez In 1930, Diana was the first woman of Mexican descent to graduate from a university in Houston. Club Chapultepec This women’s club was organized in 1931, which held social events, but also voiced concerns on behalf of the Mexican community in Houston. Margarita Florez Margarita was a CIO