View from above of the wagon road in Boulder Canyon crossing the tracks of the Colorado & Northwestern Railroad with the flume of Silver Lake Ditch on the canyon wall above. 1880-1893. Photo Courtesy of Carnegie Branch Library for Local History, Boulder CO.

2008 photo by Charlie Manlove. 1800s: Ira Duane Kneeland, 1862-1950 (Boulder, Colo.) Local call number at Carnegie Branch Library for Local History: 540-1-5 Photo. #1