Biblio
“The Illusions Of Vision And The Canals Of Mars”. Popular Science Monthly. Popular Science Monthly.
. 1907. ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
“Is Mars Inhabited?”. The Harvard Illustrated Magazine Vol. VIII (No. 6). The Harvard Illustrated Magazine.
. 1907. ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
. 1899.
Douglass, AE_Mars_1899.pdf (6.24 MB)
![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
“The Polar Cap Of Mars”. Astronomy And Astrophysics. Astronomy And Astrophysics.
. 1894. ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)