Biblio
“The Callendar Sunshine Recorder And Some Of The World-Wide Problem To Which This Instrument Can Be Applied”. In Second Pan-American Scientific Conference. Second Pan-American Scientific Conference.
. 1916. 
“Tree Growth And Solar Cycles”. In Paper Presented At International Research Council. Paper Presented At International Research Council.
. 1931. “Dendrochronology And Studies In Cyclics”. University Of Pennsylvania Bicentennial Conference. University Of Pennsylvania Bicentennial Conference.
. “Dendrochronology And Studies In Cyclics”. University Of Pennsylvania Bicentennial Conference Proceedings. University Of Pennsylvania Bicentennial Conference Proceedings.
. 
“Evidences Of Cycles In Tree Ring Records”. Proceedings Of The National Academy Of The Sciences. Proceedings Of The National Academy Of The Sciences.
. 1933. 
“Reports On The Conferences Of Cycles”. Washington, D.C. : Carneige Institution.
. 1929. 
“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. 
“A.e. Douglass And The Canals Of Mars”. The Astronomy Quarterly 3 (No. 9). The Astronomy Quarterly.
. 1979. “Crossdating At Mesa Verde National Park”. Journal Of Forestry 40 (No. 4). Journal Of Forestry.
. 1942. “Crossdating In Dendrochronology”. Journal Of Forestry 39. Journal Of Forestry.
. 1941. “Drawings Of Jupiter's Third Satellite”. Abdruck Aus Den Astr. Nachr. Bd. 143. Abdruck Aus Den Astr. Nachr. Bd. 143.
. 1897. 
“Evidence Of Climatic Effects In The Annual Rings”. Ecology 1 (No. 1). Ecology.
. 1920. 
“The First Satellite Of Jupiter”. Abdruck Aus Den Astr. Nachr. Bd. 146.. Abdruck Aus Den Astr. Nachr. Bd. 146.
. 1898. 
“The Infatigable Astronomer”. The Journal Of Arizona History. The Journal Of Arizona History.
. 1978. “Precision Of Ring Dating In Tree-Ring Chronologies”. Tree Ring Bulletin XVII (No. 3). Tree Ring Bulletin .
. 1946. 
“Present Rotation Period Of The First Satellite Of Jupiter And Its Change In Form And Period Since 1892”. The Astronomical Journal (No. 441). The Astronomical Journal.
. 1898. 
“Researches In Dendrochronology”. Bulletin Of The University Of Utah 37 (No. 2). Bulletin Of The University Of Utah.
. 1946. “The Significance Of Honor Societies ”. Phi Kappa Phi Journal VI (No. 9). Phi Kappa Phi Journal.
. 1926. 
“The Steward Observatory Of The University Of Arizona”. Publications Of The Astronomical Society (No. 178). Publications Of The Astronomical Society.
. 1918. 
“Tree Rings And Chronology”. University Of Arizona Bulletin VII (No. 4). University Of Arizona Bulletin.
. 1937. 
Field Museum News. Field Museum News.
. 1940. “Trees And Droughts In Arizona”. Professional Engineer. Professional Engineer.
. 1931. “Dating Our Prehistoric Ruins”. Natural History. Natural History.
. 1921. 
“Indications Of A Rainy Period In Southern Peru”. Science. Science.
. 1892. 
“The Lowell Observatory In Mexico”. Popular Astronomy. Popular Astronomy.
. 1897. 