Caption on reverse: "OFF-STREET PARKING PROPONENTS HAVE THEIR SAY: Twenty persons spoke in favor of Honolulu's proposed $3,000,000 downtown off-street parking project at a three-hour public hearing held by the board of supervisors yesterday afternoon. George K. Houghtailing, city planning commission engineer, is shown explaining the plans, with Alva E. Steadman, president of Cooke Trust Co., …