Texan public library book storage facilities

Just received a copy of Diana Athill's Stet, from the excellent Better World Books. I see from the stamp on the top that it came from the Houston Public Library Service. Can't help wondering if they have a depository that also overlooks a grassy knoll, like the more infamous institution in Dallas. My dad once made a worrying admission about the events of November 1963. We were watching TV together, when a voice declaimed 'everyone remembers where they were when they heard the news of Kennedy's assassination', to which dad - whose memory was never good at the best of times - replied that he didn't. I half expected the Green Berets or CIA to come bursting through the living room door...