Broken Hill Associated Smelters/ Port Pirie: c1920-57 archive of documents, including Patent application for White Lead Process (which led Broken Hill Associated Smelters to becoming the biggest lead smelter in the world), Port Pirie photographs && negatives. press clippings, menu for 1935-36 England cricket team visit, letter re 1942 Walter Lindrum visit, ephemera re swimming club with 1936 poster