Biblio
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Author Title Type [ Year
Filters: Author is Douglass, A.E. and Keyword is comet [Clear All Filters]
“Drawings Of A Comet”. Popular Astronomy. Popular Astronomy.
. 1910. 
“El Cometa De Halley”. Tucson Citizen. Tucson Citizen.
. 1910. “Halleys Comet”. Tucson Citizen. Tucson Citizen.
. 1910.