Douglas Dolphin (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Douglas Dolphin" in English language version.

refsWebsite

Global rank English rank

2books.google.com

3^rd place

3^rd place

1centennialofflight.gov

low place

low place

1web.archive.org

1^st place

1^st place

8,451^st place

5,639^th place

books.google.com

"Mayflower of the Air ready for President." Popular Science, May 1933, p. 713. Retrieved: March 5, 2012.
"Flying Life Savers." Popular Mechanics Monthly, December 1933, pp. 900–903.

centennialofflight.gov

Rumerman, Judy. "Douglas Aircraft Builds the DC-1 and DC-2." Archived September 19, 2002, at the Wayback Machine Centennial of Flight, 2003. Retrieved: March 5, 2012.

check-six.com

Freeze, Ken. "Tragedy at the Farallons - August 5th, 1941". Check-Six.com. Retrieved 24 August 2021.

web.archive.org

Rumerman, Judy. "Douglas Aircraft Builds the DC-1 and DC-2." Archived September 19, 2002, at the Wayback Machine Centennial of Flight, 2003. Retrieved: March 5, 2012.