Richard Treaster was an artist from the Cleveland area but few people that I know there know his work. Apparently he enjoyed a long, successful career and was so successful he was able to leave his day-job teaching at the Cleveland Institute of Art--a feat repeated by few there. I have only seen a few of his watercolors in person and I assume most of them are in private collections, but the few that I have seen were very nice. I think his critics say he was "too commercial" but since that criticism is completely irrational I simply dismiss it outright.
Ironically, after college I had the good fortune to be friends and roommates with Treaster's grandson for many years and I could see right away that my friend's mom had been painted in several portraits.