I think the 3/4 view is the one used some years ago for a mast head for the SPng Society publication.
Robert (Bob) Bader has done a nice side view of the #18. My understanding is that he has provided a master and permission to the Southern Pacific Narrow Gauge Historical Society for the Society to make use of it. Ideas have been bantered around: note paper, coffee mug decoration, T-shirt, etc. I that I was sent a pad of note-size paper with the image on the top.
Brian Norden
former editor SPNGHS