Jonathan's Astro Pages
Ursula Marvin
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The Evolving Universe
(2011 SI-NMNH Exhibit)
Lunar crater list
History of CfA
Oral history of the CfA buildings
(2012)
Annie Jump Cannon in Wonder Woman
The Observatory Pinafore
Ursula Marvin
Sputnik 40th Anniversary talks
Harvard Great Refractor
Ursula Marvin was a pioneering planetary geologist. Here is an article about her.
1997 CfA Almanac