Filling in the details
The car body components of this diner kit are a blank palette, not only lacking color but the specific add on details that will help to paint an accurate model of the prototype.
There is no one particular or complete source of information available to answer all the questions about detailing a model of the New Haven deluxe diners. Collective data and photos from many sources was the guide in detailing this model.
The two prototype photos of the same side of diner #5247 are the only era specific reference available that show proof positive details that could be added that would result in a more accurate finished model. A New Haven Railroad Deluxe Diner diagram also offers a wealth of dimensional and equipment data that helps in understanding what can be derived from the photos and fill in the voids of the unseen.