Johanna Fernández, a Dominican American historian and an associate professor of history at Baruch College and CUNY Graduate Center, died in Manhattan on July 30, after a long battle with cancer. She was 55. She was born and raised in the Bronx. She was one of four children of Tirso Sr. and Minerva (Estevez) Fernández, immigrants from the Dominican Republic. Tirso Sr. was a maintenance worker, and Minerva managed the home. Johanna Fernández is the author of the acclaimed book “The Young Lords: A Radical History.” This is a tribute to her life by one of her students.