Biblio
“Address At High School On Halleys Comet”. Tucson Citizen. Tucson Citizen.
. 1910. “Drawings Of A Comet”. Popular Astronomy. Popular Astronomy.
. 1910. ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
“El Cometa De Halley”. Tucson Citizen. Tucson Citizen.
. 1910. “Halleys Comet”. Tucson Citizen. Tucson Citizen.
. 1910.