BigJim
And, I don't think "Sharknose" is the proper term for the nose of any diesel or steam loco!
Keep in mind that "Sharknose" had a very different connotation in the late '40s -- the Graham Sharknose automobile was a recent memory, and the connection with the kind of nose art made famous by P40s was probably near-immediate. As used then, it referred to the 'reverse rake' of the pointed nose.
