Not too much information on Wesson I can find online, and the stub of a wiki article isn’t even helping:
His work is known for its simplicity, boldness and mastery of brushwork. He is remembered by many painters as a very encouraging teacher.
He had one daughter, Elizabeth Wesson
Thank GOD, I really was wondering if he had offspring and what his student’s thought of him – THAT is good news. His work is, however, simplistic, bold, and masterful so at least they got that part right.
But seriously, these paintings are very charming. They are simple in their shape design and usage of colors. You won’t see layers upon layers here, but clear cut silhouettes matched with strong pen work on top. He is a typical watercolorist, finding the minimum amount of information to describe his topic so as to never overwork. My favorite part is his simple outlines sometimes used in pen, it really gives them an illustrative feel, especially the renderings on shadows. I think it takes them from normal watercolors to impressive pieces. One of the best pieces I found on him was a study of a house (shown below) done in multiple weather conditions -notice the temperature differences on the white house (hint: it looks cooler in warm weather, interestingly enough).