3835 Shenandoah Street, Dallas, Texas Highland Park Neighborhood Home Architect Henry B. Thomson (Hal Thomson)Highland Park NeighborhoodMount Vernon Neighborhood In 1931, architect Hal Thomson designed this Normandy style historic Highland Park home.In 1931, architect Hal Thomson designed this Normandy style historic Highland Park home.Legendary architect Hal Thomson designed this historically significant Highland Park home in 1931.