. . . . . . . "The Lockheed twins : the commercial and military use of the Lockheed 10 Electra, 12, 14, Hudson, Lodestar, Learstar, PV-1 Ventura, PV-2 Harpoon, Saturn and conversions plus preserved and civil P-38/F-5 Lightning and P2V Neptune" . . . . "The Lockheed Twins : the commercial and military use of the Lockheed 10 Electra, 12, 14, Hudson, Lodestar, Learstar, PV-1 Ventura, PV-2 Harpoon, Saturn and conversions plus preserved and civil P-38/F-5 Lightning and P2V Neptune" . . . . "The Lockheed Twins"@en . . . . "Lockheed." . . . . "Treplanstegninger." . . "Lodestar (Turboprop transports)" . . "Flyfabrikker." . .