Biblio
“El Cometa De Halley”. Tucson Citizen. Tucson Citizen.
. 1910. “Halleys Comet”. Tucson Citizen. Tucson Citizen.
. 1910. “Where-When Did Masonry Originate”. Arizona Daily Star. Arizona Daily Star.
. 1912. “An Optical Photograph”. The Astrophysical Journal XLI (No. 3). The Astrophysical Journal.
. 1915. 
“Zodical Light And Counter-Glow And The Photography Of Large Areas And Faint Contrasts”. In Royal Photographic Society Of Great Britain. Royal Photographic Society Of Great Britain.
. 1915. 
“An Automatic Optical Photograph, Abstract”. Publications Of The Astronomical Society Of The Pacific. Publications Of The Astronomical Society Of The Pacific.
. 1919. 
“University Of Arizona Eclipse Expedition”. Popular Astronomy. Popular Astronomy.
. 1923. 
“University Of Arizona Eclipse Expedition, Port Libertad, Sonora, Mexico”. Publications Of The Astronomical Society Of The Pacific XXXVI (No. 212). Publications Of The Astronomical Society Of The Pacific.
. 1923. 
“Photograph Of Shadow Bands”. Astrophysical Journal LXIII (No. 3). Astrophysical Journal.
. 1926. 
“Solar Records In Tree Growth”. Science. Science.
. 1927. 
“Tree Growth And Solar Cycles”. In Paper Presented At International Research Council. Paper Presented At International Research Council.
. 1931. “Tree Rings And Climatic Cycles, Laboratory Of Tree-Ring Research, Astronomical Studies”. Phi Kappa Phi Journal. Phi Kappa Phi Journal. Tucson: University of Arizona.
. 1944. 
“The Infatigable Astronomer”. The Journal Of Arizona History. The Journal Of Arizona History.
. 1978. “A.e. Douglass And The Canals Of Mars”. The Astronomy Quarterly 3 (No. 9). The Astronomy Quarterly.
. 1979.