Redigerer Elmer Ambrose Sperry (avsnitt)

== Eksterne lenker ==
* [https://web.archive.org/web/20070315120948/http://fi.edu/case_files/sperry_2524/ Elmer A. Sperry case file] at the Franklin Institute contains records concerning his 1914 Franklin Award for the gyroscopic compass
* {{US patent|1279471}} for the gyroscopic compass, filed June, 1911; issued September, 1918
* [http://patft.uspto.gov/netahtml/PTO/search-bool.html US patent search page, search for Elmer and Sperry in Inventor name, 1790-present, yields about 160 results—some recent ones are by EA Sperry Jr, earliest ones not found] {{Wayback|url=http://patft.uspto.gov/netahtml/PTO/search-bool.html |date=20190428221946 }}
* {{Find a Grave|967}}
* Finding aids for the [http://findingaids.hagley.org/xtf/view?docId=ead/1893.xml Elmer Ambrose Sperry papers] {{Wayback|url=http://findingaids.hagley.org/xtf/view?docId=ead%2F1893.xml |date=20140826191331 }} and the [http://findingaids.hagley.org/xtf/view?docId=ead/1985_257.xml Elmer Sperry photograph collection] {{Wayback|url=http://findingaids.hagley.org/xtf/view?docId=ead%2F1985_257.xml |date=20140102233712 }} are available at Hagley Museum and Library.

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{{STANDARDSORTERING:Sperry, Elmer A.}}
[[Kategori:Oppfinnere fra USA]]
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[[Kategori:Fødsler i 1860]]
[[Kategori:Dødsfall i 1930]]
[[Kategori:Alumni fra Cornell University]]