William L Rhein
- Sierra Madre Occidental, Taxicaringa Municipality, 79 km south of the city of Durango, 4 km southwest of village of Guacamayita.
- 23.3036111 -104.7366667
- 2800 meters
Cine-Kodak Special 16 mm camera (according to Richard Heintzelman and Frederick Hilton, travel companions of Rhein who were interviewed by Martjan Lammertink in 2010).
Excerpt of ML Video 468598. NO AUDIO. Small portion (1 minute, 25 seconds, starting around 20:05) of entire reel depicting activity of Imperial Woodpecker. Archived from digital copy of a 16 mm film gifted to Cornell Lab of Ornithology by Ronald Thorpe, nephew of William Rhein, original recordist. Lat/long accuracy within 2km, determined by field visit in 2010 by Martjan Lammertink and Tim Gallagher who followed landmarks in still slides from 1956 by Richard Heintzelman who was a travel companion of William Rhein.