Biblio
“El Cometa De Halley”. Tucson Citizen. Tucson Citizen.
. 1910. “Halleys Comet”. Tucson Citizen. Tucson Citizen.
. 1910. “Weather Cycles In The Growth Of Big Trees”. Monthly Weather Review. Monthly Weather Review.
. 1908. 
“Physical Geography”. Tempe Normal School. Tempe Normal School.
. 1906. “Altitudes And Locations”. Coconino Sun. Coconino Sun.
. 1901. “The Missing November Meteor”. The Coconino Sun. The Coconino Sun.
. 1900. “The First Satellite Of Jupiter”. Abdruck Aus Den Astr. Nachr. Bd. 146.. Abdruck Aus Den Astr. Nachr. Bd. 146.
. 1898. 
“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. 
“Drawings Of Jupiter's Third Satellite”. Abdruck Aus Den Astr. Nachr. Bd. 143. Abdruck Aus Den Astr. Nachr. Bd. 143.
. 1897. 
“The Lowell Observatory In Mexico”. Popular Astronomy. Popular Astronomy.
. 1897. 
“How Tall We Are”. Coconino Sun. Coconino Sun.
. 1895. “Indications Of A Rainy Period In Southern Peru”. Science. Science.
. 1892. 
. 1882.

“Dendrochronology And Studies In Cyclics”. University Of Pennsylvania Bicentennial Conference Proceedings. University Of Pennsylvania Bicentennial Conference Proceedings.
. 
“Dendrochronology And Studies In Cyclics”. University Of Pennsylvania Bicentennial Conference. University Of Pennsylvania Bicentennial Conference.
.