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 Lake - Yo Semite] / [Lake Ah-Wi-Yah, Yosemite] / [Mirror Lake and Mt. Watkins, Yosemite], 1861. The J. Paul Getty Museum.