Biblio
. 1928. “Climate And Trees”. Nature Magazine. Nature Magazine.
. 1916. “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.
. 1907. “Boating Down The Colorado”. University Of Arizona Monthly 8 (No. 1). University Of Arizona Monthly.
. 1919. “An Automatic Optical Photograph, Abstract”. Publications Of The Astronomical Society Of The Pacific. Publications Of The Astronomical Society Of The Pacific.
. 1897. “Atmosphere, Telescope And Observer”. Popular Astronomy. Popular Astronomy.
. 1901. “Astronomical Telegrams”. Publications Of The Astronomical Society. Publications Of The Astronomical Society.
. 1897. “The Astronomer's Globe”. Popular Astronomy. Popular Astronomy.
. 1898. “An Ascent Of Popocatepetl”. Popular Astronomy. Popular Astronomy.
. 1897. “An Ascent Of Popocatepetl”.
. 1901. “Altitudes And Locations”. Coconino Sun. Coconino Sun.

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