I bought a subscription to Photoshop Cloud last month, and gradually experimenting with it. Not easy, but I am old, stubborn and cranky, so I press on.
I grew up watching the long defunct Northeast Airlines operate out of Portland, Maine (KPWM) as a kid. recently, I ran across a couple of relatively poor quality pictures of the three DC-4s that NEA operated in the early 1950's. As best I can tell, these were C-54's reworked in a chop shop with FAA approved mods to include a single rear entry door, an aft lounge area and some spurious "potty" sky light portholes here and there.
I took the well regarded JBK C-54/DC-4 for FSX and worked on it, and for now I think it came out pretty good. I'm not thrilled with the reflectivity, but this ALPHA Channel stuff is making my brain hurt at this point.
Unfortunately I cannot find any right side pictures of these planes so had to extrapolate a little by looking at paint jobs on NEA DC-3s and early DC-6s as to the logos, etc.
Looking at DC-4s from other airlines, there was no such thing as a standard DC-4 in regard to the rear entry door and various small porthole windows for the toilets, what I believe was an aft lounge, etc. It appears they were custom locations when built as DC-4s, or approved mods in chop shops working on surplus C-54s. The top mounted astrodome for a navigator seems to have been installed even on some production DC-4s as an option, not just on converted C-54s - likely for long overwater flights that were being initiated during the period from after WWII to at least when the Connie and DC-6 became prevalent.
Anyway, see attached.