The Oregon State University is a member of The Commons on Flickr where one can browse OSU Special Collections & Archives’ photostream. See the same photo on this Flickr photostream (it’s offered in a much higher resolution: 4728 x 3758).
Benjamin A. Gifford (1859-1936) was a renowned Oregon photographer in the early twentieth century. The Oregon State University holds a collection of more than 10,000 of his photographs. For more about his life and this collection, see Gifford Photographic Collection.