Destinations San Francisco and Oakland Helicopter Airlines

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^ http://www.airfields-freeman.com/ca/airfields_ca_sanfran.htm#sanfrandowntown
^ 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






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