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1897

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

Douglass, AE_Atmosphere, Telescope and Observer_1897.pdf (27.67 MB)

1899

Douglass, AE. 1899. “A Summary Of Planetary Work At The Lowell Observatory And The Conditions Under Which It Has Been Performed”. Popular Astronomy. Popular Astronomy.

Douglass, AE_A Summary of Planetary Work at the Lowell Observatory and the Conditions Under Which It Has Been Performed_1899.pdf (11.4 MB)

1910

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

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