Back in 2014, Dolphin Promotions—the Illinois-based production company behind LA20/21: Los Angeles Modernism Show & Sale and the Palm Springs Modernism Show & Sale—acquired the venerable Houston Antique Dealers Association (HADA) Antiques Show and rebranded it as the Houston Antiques + Art + Design Show. The event, which builds on the HADA Antique Show’s fifty-year legacy, presents a sweeping selection of treasures from the past five centuries.