On February 20, 1902, American photographer and environmentalist Ansel Easton Adams was born. He is best known for his black-and-white landscape photographs of the American West, especially Yosemite National Park. Together with Fred Archer, Adams developed the Zone System as a way to determine proper exposure and adjust the contrast of the final print.
On February 4, 1938, Disney's Snow White and the Seven Dwarfs was released in the United States as the first full length feature film to use cel-animation.