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The blueprint for the 40-inch reflector telescope by the Alvan Clark and Sons Corporation. The original lens was ordered at 42 inches but the telescope frame wasn't adjusted and fixed to hold the lens until 1925.

Cover of the book "A Photographic Study of the Brighter Planets," 1964

Cover of the book "The Photographic Story of Mars," 1962

"Three Decades of V.M. Slipher - Edwin Hubble Correspondence." Article in HAD News (The Newsletter of the Historical Astronomy Division of the American Astronomical Society), Number 95, May 2020

Photograph of Lowell Observatory's archivist, Lauren Amundson (right), with Pluto the dog in Disneyland. In a 1930 short film titled "The Picnic," Pluto first appeared with the name "Rover." He later appeared in another short film released on May 3,…

Photo in the Arizona Daily Sun of Al Whitley from Mademoiselle Magazine presenting the Mademoiselle Merit Award to Elizabeth Roemer

Article in the Arizona Daily Sun discussing Elizabeth Roemer's award as one of the Mademoiselle Ten Outstanding Women of the Year

V.M. Slipher's obituary in the Arizona Daily Sun, November 10, 1969

Arizona Daily Sun article about the sale of the Monte Vista Hotel to the V.M. Slipher family, November 3, 1964

E.C. Slipher's Obituary in the Arizona Daily Sun, August 7, 1964