Don't feel bad that you've never heard of Ervine Metzl. No one else has either.
In the 1920s, the Chicago Rapid Transit Company employed a small staff of artists to create subway posters to encourage ridership. The audience was mostly harried commuters who were fighting their way through crowded stations coated with soot and grit. Most of the posters were predictably mediocre. But one of the artists, Ervine Metzl, sat at his board and created timeless designs that transcended the narrow limitations of his forum and his assignment.
Metzl later found work illustrating for Fortune Magazine. He wrote a book which no one reads anymore about illustrating posters. Then he trundled off to oblivion. But while he was working on art like this, he connected with something far larger and more permanent than himself. No matter how little he got paid, and no matter how little he is remembered today, there is something perfectly True about these wonderful designs. This process may be the best shot any of us has to, in the wonderful words of Arthur Koestler, "catch a glimpse of eternity through the window of time."