San Francisco and Oakland Helicopter Airlines (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "San Francisco and Oakland Helicopter Airlines" in English language version.

refsWebsite

Global rank English rank

8timetableimages.com

7,271^st place

4,049^th place

3airfieldsfreeman.com

low place

low place

3departedflights.com

7,936^th place

4,272^nd place

1books.google.com

3^rd place

3^rd place

1aerodacious.com

low place

low place

low place

low place

1mariposagazette.com

low place

low place

aerodacious.com

"CAM Contract Air Mail First Flights AM-103". Retrieved 25 January 2012.

airfieldsfreeman.com

books.google.com

"New Helicopter Service". Flying Magazine: 8. August 1961.

departedflights.com

http://www.departedflights.com, July 1, 1983 North American Pocket Official Airline Guide (OAG), San Francisco-Oakland flight schedules
http://www.departedflights.com, July 1, 1983 North American Pocket Official Airline Guide (OAG), San Francisco-San Francisco China Basin flight schedules
http://www.departedflights.com, Feb. 15, 1985 Official Airline Guide (OAG), San Francisco-Oakland & San Francisco-Oakland Convention Center flight schedules

localwiki.org

"Alcopark parking garage - Oakland - LocalWiki". localwiki.org. Retrieved 2020-02-14.

mariposagazette.com

"James 'Jim' Willard Johnson - Mariposa Gazette". 11 May 2023.

timetableimages.com

http://www.timetableimages.com, Sept. 1, 1961 SFO Helicopter Airlines system timetable & Oct. 26, 1975 SFO Helicopter system timetable
http://www.timetableimages.com, Sept. 1, 1961 SFO Helicopter Airlines system timetable
http://www.timetableimages.com, Aug. 1, 1962 SFO Helicopter Airlines timetable
http://www.timetableimages.com, April 27, 1969 SFO Helicopter Airlines timetable, San Francisco Airport schedules
http://www.timetableimages.com, Oct. 26, 1975 SFO Helicopter Airlines timetable
http://www.timetableimages.com, Sept. 1, 1983 SFO Helicopter Airlines timetable cover
http://www.timetableimages.com, April 27, 1969 SFO Helicopter Airlines timetable, Concord flight schedules
http://www.timetableimages.com, Aug. 1, 1962 SFO Helicopter Airlines timetable, Sunnyvale flight schedules