Montanan rare airplane certificate. From a 1914 New York Times article: "The Thomas Brothers' Aeroplane Company of Bath has closed a contract with U.A. White of the White Equipoised Aeroplane Company of Helena, Mont., for the construction of the White type of aeroplane, which, as indicated by its name, is a flying machine that relieves the operator entirely from maintaining poise and balance of the aeroplane as a part of his operation of flying." City: Helena State: Montana Date: 1915-1916