Interior Catholic Church, Virginia City. by Carleton Watkins https://www.rawpixel.com/image/14321510/interior-catholic-church-virginia-city-carleton-watkinsFree Image from public domain licenseThe Hot Springs. Yung Foo River near Foo Chow by Tung Hing https://www.rawpixel.com/image/14322356/the-hot-springs-yung-foo-river-near-foo-chow-tung-hingFree Image from public domain license