Oceanic III picture

I was toying around with paint and a line drawing of the proposed Oceanic's profile to make a picture of what she might have looked steaming along at night:


Anyway, I was wondering if anybody could identify the source of the line drawing so I can give credit to who originally made it. I seem to remember it was a image comparing the proposed Oceanic, Queen Mary, and Normandie.

It needs quite a bit of work to make it look realistic, but I figured I'd get possible copyright infringement out of the way before working on it any more.