You can find a lot in wikipedia if you dig and dig. You can also go to decal manufacturer's website and grab their images to use as a reference when you paint your own. You do paint your own don't you? Just enlarge what you find, trace over it on single layers for each color or detail, and then merge/reduce the end result to fit. Looks 100% better than just scanning a decal sheet. You can make any necessary color corrections that way also.
:ernae: