This sounds like a great exhibition and I hope to go on my next trip to New York. House Proud at the Cooper Hewitt Museum, is an exhibition of watercolors of it looks like 19th century interiors. I love collections of interior paintings because it give you a really clear sense of how rooms were used closer to the time they were first built and designed. This image is particularly fascinating-look at the desk right up against the banquette for seating-how modern???? See this New York Times review.