It looks like the add boys still didn't quite know how to advertise to these new fangled motor bike riders! It was pointed out to me that by 1914, motorcycles were already in their third incarnation. First, was bicycles with small engines clipped on, second was bicycles with engines between the frame rails, and third was dedicated frames with a hand throttle, and a clutch that could be manually disengaged so you could sit at a stop light with the engine running.'Aristocrat Leather Leggings...'