ocr: Pantingsa The scene Wilson is working on in this photograph recreates an area near the North Platte River, in Wyoming. The year is 1850, when some sixty million bison roamed the western plains from Mexico to Canada. To create this dio- rama, Wilson, along with a scientific specialist and another artist, went to Wyoming in 1930. There he made color sketches, took stereo photographs, and collected specimens that were to go in the foreground of the scene. On his return he reproduced the scene on the curved walls of the diorama, looking through a stereo 214