EDINBURG — The Museum of South Texas History will host a Sunday Speaker Series Online presentation, “Adela Sloss-Vento of San Juan and Edinburg: Major Tejana Civil Rights Activist and Feminist, 1927-1990,” with Cynthia Orozco at 2 p.m. July 12 on Facebook Live. Orozco wrote the first comprehensive biography titled, “Agent of Change: Adela Sloss-Vento, Mexican American Civil Rights Activist and Texas Feminist.” Adela Sloss-Vento is considered a formidable civil rights activist and feminist, whose grassroots organizing in Texas made her an influential voice in the fight for equal rights for Mexican Americans. Sloss-Vento graduated from PSJA High School in 1927. She was ...