Willard E. Worden (1868-1946) was a photographer and later gallery owner at Union Square. His most prolific period falls between 1905 and 1915. He was one of the PPIE's official photographers and captured the fair both day and night. His personal interest seemed to be with the natural world. His images of the unbuilt Sunset District and Lands End are notable documents of a lost environment. Extensive collections of Worden's images reside in the San Francisco Public Library, de Young Museum, and other institutions. All images here scanned from glass negatives.