Main from Hale N.W. quad - University of Colorado - 13500c310138f6a541b0c25c57b7ae3a

photographic paper photography (process) This view looking southeast was taken in early fall some time after 1906 when Chemistry was enlarged. It shows the towers of Old Main, Chemistry, and Anatomy. The tall steel stack on the power house (1910) would show over Chemistry so this puts this picture between 1906 and 1910. A very unusual greenhouse-like structure appears on the roof of Chemistry. I don't know what this could be. Probably taken the same day as 17-12. The sun was not out for this picture but was for 17-12. Both have smoke in them.