Smith was an engineer at the Douglas Aircraft Company, working in general arrangement design under Ed Heinemann. I mentioned Smith here. More regarding Smith can be found here and here. I regard R.G. Smith as one of the all-time best aviation artists.
Below are photos I took in several areas of the museum that featured Smith's artwork. Click on the images for substantial enlargements. (Well, that's what I get on my iMac.)
Below are details from other paintings that allow you to see Smith's painting style up close.