I’ve really enjoyed flipping through a Norman Rockwell book I received for Christmas this year. Below is a brief intro to Rockwell via Wiki pedia
Norman Percevel Rockwell (February 3, 1894 – November 8, 1978) was a 20th-century American painter and illustrator. His works enjoy a broad popular appeal in the United States, where Rockwell is most famous for the cover illustrations of everyday life scenarios he created for The Saturday Evening Post magazine for more than four decades.[1] Among the best-known of Rockwell’s works are the Willie Gillis series, Rosie the Riveter (although his Rosie was reproduced less than others of the day), Saying Grace (1951), and the Four Freedoms series. He is also noted for his work for the Boy Scouts of America (BSA); producing covers for their publication Boys’ Life, calendars, and other illustrations.
Here’s a link to some of his best work
AllDay Creative, Inc. 
There’s this great exhibit on him at the Brooklyn Museum – it shows the original photos he took of his subjects and then the paintings he did from them. It’s pretty amazing. http://www.brooklynmuseum.org/exhibitions/norman_rockwell/