1862 May

15th  The Union Baseball Grounds at Marcy Avenue and Rutledge Street in the Williamsburg section of Brooklyn opens, the first enclosed ball field to charge an admission fee. The property has been used as a skating pond in winter months. No rent will be charged to the clubs playing there as the admission fee will pay for the upkeep. [This opening date is sometimes listed as May 16. See Seymour The Early Years].