moran. soon after, he began signing his work with the monogram "t.y.m." for thomas "yellowsto" moran. yellowstone remained a source of inspiration throughout moran's career. in 1892, the artist returned to the park to create new paintings of its wonders. by this time, yellowstone was a popular tourist attraction. the idea of the national park, suggested two decades before, had been fully realized. moran's depictions of yellowstone left a permanent mark on the american consciousness, transforming the public perception of the west fr a frightful land of mystery into a patriotic symbol of the beauty and promise of america. ( music ) narrator: it tended to look much like any other building, the usual geometric jumble of rods, forms, and scaffolds. but by its location alone, here on the familiar axis of amerin history, it was destined to become a prominent stone in the nation's crown. the first problem architect i. m. pei faced was the shape of the site, an asymmetrical set-back trapezoid on wch his building would have to respect the classic symmetry ofts older sister and serve also a comb