Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 2459 Helicopter Transport
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 2458 Helicopter Transport
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 2457 Helicopter Transport
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 2456 Helicopter Transport
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 2455 Helipad - Bright Angel Canyon
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 2432 Helicopter Transport
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 2431 Helicopter Transport
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 0319 Helicopter Transport
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 0317 Helicopter Transport
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 0316 Helicopter Transport
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 0315 Silver Bridge
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 0314 Silver Bridge Construction
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 0313 Helicopter Transport
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 0312
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 0311
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 0310
Grand Canyon NPS:
Trans-canyon Pipeline (Historic) 0309