sentences:  His paintings were reproduced by the thousands, often as part of local business promotions for a public eager to own a piece of his artwork.His most popular works include paintings of the Delta Queen, Lone Star, and Quinlan riverboats, the Lincoln Memorial and U.S. Capitol Buildings.His first federally commissioned work was presented to Congress in 1971, and he went on to share an audience with President Ronald Reagan in 1981 while presenting a painting of the White House.