Hughes Helicopters (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Hughes Helicopters" in English language version.

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boeing.com

"The Boeing Logbook: 1964 – 1970". Boeing. Archived from the original on May 24, 2011. Retrieved March 10, 2011.
"The Hughes Tool Co. ... Looking at Rotors". Post-War Developments: 1946–1956. Boeing. Archived from the original on March 9, 2011. Retrieved March 10, 2011.
"The Boeing Logbook: 1977 – 1982". Boeing. Archived from the original on March 6, 2012. Retrieved March 10, 2011.

Rumerman, Judy. "The Hughes Companies". U.S. Centennial of Flight Commission. Archived from the original on October 10, 2007.

Company Archived 2009-03-05 at the Wayback Machine. MD Helicopters. Retrieved on 2013-08-16.

"Hughes Model 269A (TH55) Osage". www.sprucegoose.org. Archived from the original on December 21, 2008. Retrieved March 10, 2011.

Rumerman, Judy. "The Hughes Companies". U.S. Centennial of Flight Commission. Archived from the original on October 10, 2007.
Company Archived 2009-03-05 at the Wayback Machine. MD Helicopters. Retrieved on 2013-08-16.
"Hughes Model 269A (TH55) Osage". www.sprucegoose.org. Archived from the original on December 21, 2008. Retrieved March 10, 2011.
"The Boeing Logbook: 1964 – 1970". Boeing. Archived from the original on May 24, 2011. Retrieved March 10, 2011.
"The Hughes Tool Co. ... Looking at Rotors". Post-War Developments: 1946–1956. Boeing. Archived from the original on March 9, 2011. Retrieved March 10, 2011.
"The Boeing Logbook: 1977 – 1982". Boeing. Archived from the original on March 6, 2012. Retrieved March 10, 2011.