Keywords: sdasm aviation aeronautics aircraft airplane biplane n-x179 nx179 keystone aircraft corporation keystoneaircraftcorporation keystone aircraft keystoneaircraft keystone k-47 pathfinder keystonek47pathfinder keystone k-47 keystonek47 keystone pathfinder keystonepathfinder k-47 k47 k-47 pathfinder k47pathfinder keystone american legion keystoneamericanlegion american legion americanlegion wright whirlwind wrightwhirlwind wright j-5 whirlwind wrightj5whirlwind wright j-5 wrightj5 j-5 j5 whirlwind nc1612 keystone k-47a keystonek47a k-47a k47a c/n 3137 cn3137 west indian aerial express westindianaerialexpress santa maria santamaria pan american airways panamericanairways pan american panamerican pan am panam paa x-abcq xabcq mexicana blackandwhite monochrome black and white Catalog #: 00067829 Manufacturer: Keystone Designation: Official Nickname: Pathfinder Notes: Repository: San Diego Air and Space Museum Archive Catalog #: 00067829 Manufacturer: Keystone Designation: Official Nickname: Pathfinder Notes: Repository: San Diego Air and Space Museum Archive |