Michael O' Shaughnessy
|Died||12 October 1934(aged 70)|
|Parent(s)||Patrick O'Shaughnessy |
Michael Maurice O'Shaughnessy (28 May 1864 – 12 October 1934) was an Irish civil engineer who became city engineer for the city of San Francisco during the first part of the twentieth century and developed the Hetch-Hetchy water system. 
- Prediville, Norma (16 October 2017). "From Loughill to San Francisco with flair: Engineering giant Michael M O'Shaughnessy remembered". Limerick Leader. Retrieved 9 June 2020. CS1 maint: discouraged parameter (link)
- "Cristalen". "Biographical Notes: Michael Maurice O'Shaughnessy". Wandering Lizard web site. Retrieved 10 January 2010. CS1 maint: discouraged parameter (link)
- Charles R. Boden (December 1934). "In memoriam: Michael Maurice O'Shaughnessy". California Historical Society Quarterly. California Historical Society. 13 (4): 415–416. JSTOR 25160549.
- Wanda A. Adams (8 September 2002). "Hike Through History at Pololū Valley". Honolulu Advertiser. Retrieved 10 January 2010. CS1 maint: discouraged parameter (link)
- Robert Cherny. "The City's Engineer: Michael M. O'Shaughnessy". FoundSF.org. Retrieved 10 January 2010. CS1 maint: discouraged parameter (link)
- Robert W. Cherny (Fall 1994). "City Commercial, City Beautiful, City Practical: The San Francisco Visions of William C. Ralston, James D. Phelan, and Michael M. O'Shaughnessy". in California History magazine. 73 (4). California Historical Society. pp. 296–308.
- Guide to the Michael Maurice O'Shaughnessy Papers at The Bancroft Library
- Historic American Engineering Record (HAER) No. CA-162, "Mile Rock Tunnel, Under Forty-eighth Avenue from Cabrillo Street to San Francisco Bay at Point Lobos, San Francisco, San Francisco County, CA", 19 photos, 12 data pages including brief biography of O'Shaughnessy