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1925

Douglass, AE. 1925. “Radio Talks On Science”. Scientific Monthly. Scientific Monthly.

Douglass, AE_Radio Talks on Science_1925.pdf (5.29 MB)

1923

Douglass, AE. 1923. “Historical Address”.

Douglass, AE_Historical Address_1923.pdf (6.29 MB)

Douglass, AE. 1923. “University Of Arizona Eclipse Expedition”. Popular Astronomy. Popular Astronomy.

Douglass, AE_University of Arizona Eclipse Expedition_1923.pdf (3.33 MB)

Douglass, AE. 1923. “University Of Arizona Eclipse Expedition, Port Libertad, Sonora, Mexico”. Publications Of The Astronomical Society Of The Pacific XXXVI (No. 212). Publications Of The Astronomical Society Of The Pacific.

Douglass, AE_The University of Arizona Eclipse Expedition, Port LIbertad, Sonora, Mexico_1923.pdf (12.3 MB)

1922

Douglass, AE. 1922. “Some Aspects Of The Use Of The Annual Rings In Trees In Climatic Study”. The Smithsonian Report For 1922. The Smithsonian Report For 1922.

Douglass, AE_Some Aspects of the Use of the Annual Rings of Trees in Climatic Study_1922.pdf (20.6 MB)

Douglass, AE. 1922. “Some Topographic And Climatic Characters In The Annual Ring Of The Yellow Pines And Sequoias Of The Southwest ”. Proceedings Of The American Philosophical Society LXI (No. 2). Proceedings Of The American Philosophical Society.

Douglass, AE_Some Topographic and Climatic Characters in the Annual Ring of the Yellow Pines and Sequoias of the Southwest_1922.pdf (5.9 MB)

1921

Douglass, AE. 1921. “Dating Our Prehistoric Ruins”. Natural History. Natural History.

Douglass, AE_Dating Our Prehistoric Ruins_1921.pdf (55.42 MB)

1920

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

Douglass, AE_Evidence of Climatic Effects in the Annual Rings of Trees_1920.pdf (11.8 MB)

1919

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

Douglass, AE_An Automatic Optical Photograph_1919.pdf (1.21 MB)

1918

Douglass, AE. 1918. “The Steward Observatory Of The University Of Arizona”. Publications Of The Astronomical Society (No. 178). Publications Of The Astronomical Society.

Douglass, AE_The Steward Observatory of the University of Arizona_1918.pdf (4.65 MB)

1917

Douglass, AE. 1917. “Climatic Records In The Trunks Of Trees”.

Douglass, AE_Climatic Records in the Trunks of Trees_1917.pdf (13.31 MB)

1916

Douglass, AE. 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.

Douglass, AE_The Callendar Sunshine Recorder and Some of the World-Wide Problems to Which This Instrument Can Be Applied_1916.pdf (9.7 MB)

1915

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

Douglass, AE_An Optical Photograph_1915.pdf (13.21 MB)

Douglass, AE. 1915. “Zodical Light And Counter-Glow And The Photography Of Large Areas And Faint Contrasts”. In Royal Photographic Society Of Great Britain. Royal Photographic Society Of Great Britain.

Douglass, AE_Zodical Light and Counter-Glow and the Photography of Large Areas and Faint Contrasts_1915.pdf (4.88 MB)

1914

Douglass, AE. 1914. “A Method Of Estimating Rainfall By The Growth Of Trees”. Bulletin Of The American Geographic Society XLVI. Bulletin Of The American Geographic Society.

Douglass, AE_A Method of Estimating Rainfall by the Growth of Trees_1914.pdf (14.44 MB)

Douglass, AE. 1914. “A Photographic Periodogram Of The Sun-Spot Numbers”. The Astrophysical Journal, XL (No. 3). The Astrophysical Journal, .

Douglass, AE_A Photographic Periodogram of the Sun-Spot Numbers_1914.pdf (7.69 MB)

1910

unknown,. 1910. “Address At High School On Halleys Comet”. Tucson Citizen. Tucson Citizen.

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

Douglass, AE_Drawings of a Comet_1910.pdf (1.86 MB)

Douglass, AE. 1910. “El Cometa De Halley”. Tucson Citizen. Tucson Citizen.

Douglass, AE. 1910. “Halleys Comet”. Tucson Citizen. Tucson Citizen.

1908

Douglass, AE. 1908. “Weather Cycles In The Growth Of Big Trees”. Monthly Weather Review. Monthly Weather Review.

Douglass, AE_Weather Cycles in the Growth of Big Trees_1908.pdf (46.65 MB)

1907

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

Douglass, AE_Boating Down the Colorado_1907.pdf (5.37 MB)

Douglass, AE. 1907. “The Illusions Of Vision And The Canals Of Mars”. Popular Science Monthly. Popular Science Monthly.

Douglass, AE_The Illusions of Vision and the Canals of Mars_1907.pdf (11.87 MB)

Douglass, AE. 1907. “Is Mars Inhabited?”. The Harvard Illustrated Magazine Vol. VIII (No. 6). The Harvard Illustrated Magazine.

Douglass, AE_ Is Mars Inhabited_1907.pdf (2.93 MB)

1906

Douglass, AE. 1906. “Physical Geography”. Tempe Normal School. Tempe Normal School.