Manuscripts
Cepheids in Spiral Nebulae
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[Edwin Powell Hubble]. Cepheids in Spiral Nebulae. Published in Popular Astronomy 33 252-255 and in Observatory 48 (1925): 139-142
Manuscripts
The papers of Edwin P. Hubble include manuscripts and reprints of his articles, papers, public lectures, addresses, etc., scientific documentation for his papers, logbooks of photographic plates taken by Hubble at Mount Wilson and Palomar Observatories, diaries and biographical memoirs of his wife Grace Burke Hubble, professional, personal, and social correspondence, photographs, medals and awards, a scrapbook assembled by Grace Hubble, newspaper clippings, etc.
HUB 11
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"A Spiral Nebula as a Stellar System: Messier 31"
Manuscripts
The papers of Edwin P. Hubble include manuscripts and reprints of his articles, papers, public lectures, addresses, etc., scientific documentation for his papers, logbooks of photographic plates taken by Hubble at Mount Wilson and Palomar Observatories, diaries and biographical memoirs of his wife Grace Burke Hubble, professional, personal, and social correspondence, photographs, medals and awards, a scrapbook assembled by Grace Hubble, newspaper clippings, etc.
mssHUB 1-1098
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"A Spiral Nebula as a Stellar System: Messier 33"
Manuscripts
The papers of Edwin P. Hubble include manuscripts and reprints of his articles, papers, public lectures, addresses, etc., scientific documentation for his papers, logbooks of photographic plates taken by Hubble at Mount Wilson and Palomar Observatories, diaries and biographical memoirs of his wife Grace Burke Hubble, professional, personal, and social correspondence, photographs, medals and awards, a scrapbook assembled by Grace Hubble, newspaper clippings, etc.
mssHUB 1-1098

![[Van Maanen's internal motions of spiral nebulae]](/_next/image?url=https%3A%2F%2Frail.huntington.org%2FIIIF3%2FImage%2F22APN4OEG2IY%2Ffull%2F%5E360%2C%2F0%2Fdefault.jpg&w=750&q=75)
![Angular Rotations of Spiral Nebulae [An analysis of the measurements of Adriaan Van Maanen]](/_next/image?url=https%3A%2F%2Frail.huntington.org%2FIIIF3%2FImage%2F22APN4OULZUK%2Ffull%2F%5E360%2C%2F0%2Fdefault.jpg&w=750&q=75)