Browse Items (26 total)

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

ARIZONA TERRITORY 1882.jpg

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…

Tombaugh, Muron, Telegram to Clyde Tombaugh from his parents

Tombaugh Telegram.jpg

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)

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Sykes, Stanley, Stanley Sykes large sketchbook

Sykes Large Sketchbook.pdf

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…

Sykes, Stanley, Stanley Sykes small sketchbook

Sykes Small Sketchbook.pdf

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…

Slipher, Vesto Melvin, Letter from V.M. Slipher to Albert Einstein, January 14, 1931

Einstein.1.jpg

Slipher, Vesto Melvin, Letter from V.M. Slipher to Albert Einstein, January 14, 1931, 1931-01-14

A letter from V.M. Slipher to Albert Einstein, inviting Einstein to visit Lowell Observatory and northern Arizona.

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Reaves, Gibson, W.H. Pickering, Milton Humason, and the Discovery of Pluto

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

Lowell, Percival, Color drawing of Mars, 1905

colormars1905 - low.jpg

Lowell, Percival, Color drawing of Mars, 1905, 1905

Percival Lowell's color drawing of Mars, 1905

Lowell, Percival, Drawing of Mars with canals, 1901

1901mars.jpg

Lowell, Percival, Drawing of Mars with canals, 1901, 1901

Percival Lowell's black and white drawing of Mars with canals

Lowell, Percival, Mars Map, 1905

Mars 1905 - low.jpg

Lowell, Percival, Mars Map, 1905, 1905

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

Lowell, Percival, Mars Map, 1896-1897

Mars 1896-7 - low.jpg

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

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

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