Andrew Ellicott Douglass

Letter from A.E. Douglass to Benjamin Boss (1918) and draft of "Tucson or Vicinity as a Site for an Astronomical Observatory"

Letter from Citizens of Flagstaff to A.E. Douglass, April 17, 1894

Letter from Percival Lowell to A. E. Douglass on Selection of Flagstaff as Site for an Observatory, April 10, 1894

Letter to A.E. Douglass from the citizens of Flagstaff expressing support for the establishment of an observatory in Flagstaff, April 17, 1894

Telegram from A.E. Douglass to V.M. Slipher congratulating him on the new planet

Instructions Given to A.E. Douglass Regarding His Trip to Arizona, February 28, 1894

Letter from A.E. Douglass to Percival Lowell, May 10, 1894

Telegram from A. E. Douglass to Percival Lowell Telling of Ground Being Broken for Observatory, April 23, 1894

Telegram from Percival Lowell to A. E. Douglass Regarding Telescope Dome Preparations, April 16, 1894

G.A. Waterbury and A.E. Douglass and the Lowell Observatory, 1898

This Day in Arizona History, 05-22 (May 22)

The St. Johns Herald, 1932-12-01