We would go to the races then stay for dog races at night, sometimes go to the jai alie at night. Fun times. They would hand write to bet ticket on a small piece of paper. Also was know for skimming funds from the pools. Free admission, Rum & Coke .75 Very safe in those days. I remember the cheap Hot Dogs. Somewhere I have dozens of programs and tickets. The great jockey Victor Espinoza who has won the triple crown on American Pharoah and a leading US jockey, he started riding at 17 in Mexico City.