"L-1049B" . . "R7O-1" . "VC-121J" . "VC-121B" . "Lockheed VC-121J Constellation" . "JC-121C" . "R7V-1/C-121J" . . . "C-121G" . "Lockheed NC-121K Constellation" . "RC-121D" . . "Lockheed C-121 Constellation" . . "C-121J (Super Constellation)" . . "C-121A" . . . . "C-121" . "Lockheed RC-121 Constellation" . . "NC-121J" . "VC-121E" . . "C-121 Super Constellation" . "Lockheed R7V-1" . "R7V/C-121 Constellation" . "Lockheed C-121 Constellation" . "VC-121G" . "VC-121A" . . "Lockheed VC-121A-LO Constellation" . "L-1049F" . . . "TC-121G" . "C-121C Constellation" . "Lockheed C-121J Super Constellation" . "RC-121C" . "NC-121D" . . "C-121J" . . . . . "NC-121S" . "R7V Constellation" . . . "C-121/R7V Constellation" . "EC-121K
NC-121K" . . "Lockheed R7V-1 Super Constellation" . . "R7V-1" . "VC-121C" . "C-121 Constellation airplane" . . . "Lockheed C-121A Constellation" . "R7V-1P" . . . . . "Lockheed VC-121A Constellation" . "Lockheed R7V Super Constellation" . "Lockeed C-121 Constellation" . . . "TC-121C" . "Lockheed C-121/R7V Constellation" . "C-121C" . . . . . "NC-121C" . . . "unarmed airplane" . . "C-121 Constellation" . "NC-121J,K" . . . "C-121/R7O/R7V Constellation" . . "Lockheed R7V-1 Constellation" .