Biblio
“Trees And Droughts In Arizona”. Professional Engineer. Professional Engineer.
. 1931. “Reports On The Conferences Of Cycles”. Washington, D.C. : Carneige Institution.
. 1929. 
“Evidence Of Climatic Effects In The Annual Rings”. Ecology 1 (No. 1). Ecology.
. 1920. 
“A Method Of Estimating Rainfall By The Growth Of Trees”. Bulletin Of The American Geographic Society XLVI. Bulletin Of The American Geographic Society.
. 1914. 