Browse Items (26 total)

Reaves, Gibson, W.H. Pickering, Milton Humason, and the Discovery of Pluto, 1983-07-22

"W.H. Pickering, Milton Humason, and the Discovery of Pluto." Talk given by Gibson Reaves at Lowell Observatory, July 22, 1983

Tombaugh, Muron, Telegram to Clyde Tombaugh from his parents, 1930-03-14

Telegram to Clyde Tombaugh from his parents congratulating him the day after the announcement that he discovered a planet (Pluto)

Tags: Clyde Tombaugh, Pluto

Sykes, Stanley, Stanley Sykes small sketchbook, ca. 1950s

A small sketchbook owned by Stanley Sykes. This sketchbook features various landscape drawings of places in California. Sketchbook courtesy of Diana…

Sykes, Stanley, Stanley Sykes large sketchbook, Unknown

Large sketchbook owned by Stanley Sykes. This sketchbook includes drawings of places in Flagstaff, Arizona and unidentified photographs. Courtesy of…

Lowell, Percival, Mars Map, 1896-1897, 1896-1897

Percival Lowell's hand-drawn map of Mars, 1896-1897

Lowell, Percival, Mars Map, 1905, 1905

Percival Lowell's hand-drawn map of Mars, 1905

United States Department of the Interior, Map of the Arizona Territory, 1892, 1892

Map of the Arizona Territory used by Andrew Douglass on his trip to find a site for Percival Lowell's observatory in 1894. Douglass' handwritten notes…

Lowell Observatory, Lowell Observatory Visitor Guestbook, 1894-1938, 1894 - 1938

Lowell Observatory visitor guestbook from 1894 to 1938. Notable signatures include astronomers Edward Emerson Barnard, Bart Bok, William Wallace…

Lowell Observatory, Lowell Observatory Guestbook 1957-1989, 1957 - 1989

Lowell Observatory guestbook from 1957 to 1989. Includes professional meetings and workshops, retirement parties, and dedications.

Lowell Observatory, Lowell Observatory Brochure, 1970 ca.

A Lowell Observatory brochure from circa 1970.