October 2011

Evidences of Cycles in Tree Ring Records

Douglass, AE. 1933. “Evidences Of Cycles In Tree Ring Records”. Proceedings Of The National Academy Of The Sciences. Proceedings Of The National Academy Of The Sciences.

Evidence of Climatic Effects in the Annual Rings

Douglass, AE. 1920. “Evidence Of Climatic Effects In The Annual Rings”. Ecology 1 (No. 1). Ecology.

Drawings of a Comet

Douglass, AE. 1910. “Drawings Of A Comet”. Popular Astronomy. Popular Astronomy.

Boating Down the Colorado

Douglass, AE. 1907. “Boating Down The Colorado”. University Of Arizona Monthly 8 (No. 1). University Of Arizona Monthly.

Atmosphere, Telescope and Observer

Douglass, AE. 1897. “Atmosphere, Telescope And Observer”. Popular Astronomy. Popular Astronomy.

Astronomical Telegrams

Douglass, AE. 1901. “Astronomical Telegrams”. Publications Of The Astronomical Society. Publications Of The Astronomical Society.

An Optical Photograph

Douglass, AE. 1915. “An Optical Photograph”. The Astrophysical Journal XLI (No. 3). The Astrophysical Journal.

An Automatic Optical Photograph, Abstract

Douglass, AE. 1919. “An Automatic Optical Photograph, Abstract”. Publications Of The Astronomical Society Of The Pacific. Publications Of The Astronomical Society Of The Pacific.

An Ascent of Popocatepetl

Douglass, AE. 1898. “An Ascent Of Popocatepetl”. Popular Astronomy. Popular Astronomy.

An Ascent of Popocatepetl

Douglass, AE. 1897. “An Ascent Of Popocatepetl”.