1909 1 20 Motorcycle Construction as Seen at the Madison Square Garden Show By LE French THE HORSELESS AGE page 100

1909 1 20  THREE CYLINDER CURTISS MOTORCYCLE, “F.N.” SIX HORSE POWER MOTOR CYCLE WITH FORE CARRIAGE ATTACHED, THOR REDUCING GEAR, SHAFT DRIVE CONSTRUCTION OF F.N. LIGHT SINGLE MOTORCYCLES   THE HORSELESS AGE Vol. 23, No. 8 page 100