Billhead of Weil and Aaron, Malt Dealers, Pittsburgh, Pennsylvania, September 29, 1886 Billhead from the firm of Weil and Aaron, malt dealers located at 1066 Penn Avenue, with offices at 12, 14 & 16 Vinial Street, Allegheny, Pittsburgh, Pennsylvania. The billhead is dated September 29, 1886. The firm dealt in barley, malt, rye, and hops. The billhead shows the names J. Weil and the firm's name.