The J. Paul Getty Museum
License, verbatimCC0
The J. Paul Getty Museum: image dedicated to the public domain under Creative Commons Zero (CC0), stated on the media record itself ('Rights for Media'), with download clearance.
Carleton Watkins. The Yosemite Falls from the Glacier 1st Trail, Yosemite, 2634 Ft., 1878. The J. Paul Getty Museum.