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template is Document
Atlantic and Pacific Railroad Company Shipping Order, April 10, 1895
template is Image
Black and white drawing of Mars by Percival Lowell, 1901
template is PDF
Cablegram from Lowell to Douglass, March 4, 1896
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Clyde Tombaugh at 13-inch Telescope Eyepiece
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Clyde Tombaugh at a Zeiss Blink Comparator
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Color drawing of Mars by Percival Lowell, 1905
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Complete Recording of Staff Meeting, June 3, 1974 (Part 1)
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Complete Recording of Staff Meeting, June 3, 1974 (Part 2)
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Discovery Channel Telescope
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Discovery Channel Telescope Dome
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Discovery Channel Telescope Groundbreaking, July 12, 2005
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Discovery Channel Telescope Site
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Drawings of Mars by Percival Lowell, Wrexie Leonard, and T.J.J. See
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First Observation Notes of Mars by Percival Lowell in 1894
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Flagstaff It Is, April 16, 1894
template is PDF
Harvard College Observatory Announcement Card 108
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Harvard College Observatory Announcement Card 121
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Harvard College Observatory Announcement Card 133
template is Document
Instructions Given to A.E. Douglass Regarding His Trip to Arizona, February 28, 1894
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