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Clyde W. Tombaugh Autograph Letter Signed

Currency:USD Category:Collectibles / Autographs Start Price:NA Estimated At:200.00 - 400.00 USD
Clyde W. Tombaugh Autograph Letter Signed

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Auction Date:2023 Feb 08 @ 18:00 (UTC-5 : EST/CDT)
Location:15th Floor WeWork, Boston, Massachusetts, 02108, United States
ALS - Autograph Letter Signed
ANS - Autograph Note Signed
AQS - Autograph Quotation Signed
AMQS - Autograph Musical Quotation Signed
DS - Document Signed
FDC - First Day Cover
Inscribed - “Personalized”
ISP - Inscribed Signed Photograph
LS - Letter Signed
SP - Signed Photograph
TLS - Typed Letter Signed
ALS, one page, 8.5 x 11, New Mexico State University letterhead, May 8, 1991. Handwritten letter commenting on the solar system, in part: "We have not even found a 10th, or 11th planet beyond Pluto, much less than a 12th. That our first civilization was founded by people from 'this' (12th) planet is absurd. It would be so far from the sun, that its temperature would be more than 400 F below zero…All the planets orbits are ellipses (not circular), some more than others. Pluto is the most elliptical, Mercury next, Mars third. Such orbits are not really irregularities, but very common. In fact a perfectly circular orbit would be a freak!" In fine condition.