The Moon (left) May 12, 1859; (right) Feb. 22, 1858 by Warren De la Rue and Beck and Beck Smith https://www.rawpixel.com/image/14265699/photo-image-frame-plant-spaceFree Image from public domain licenseIndian Sweat House, Mendocino County, California. by Carleton Watkins https://www.rawpixel.com/image/14255861/indian-sweat-house-mendocino-county-california-carleton-watkinsFree Image from public domain licenseDonner Lake and Eastern Summit, From the Road on the Western Summit. by Lawrence and Houseworth https://www.rawpixel.com/image/14257249/photo-image-plant-tree-artFree Image from public domain licenseTasayac, or the Half Dome, 5000 feet, Yosemite Valley, Mariposa County, Cal. by Carleton Watkins https://www.rawpixel.com/image/14256172/photo-image-frame-plant-treeFree Image from public domain licenseClass II, Order VI, Natatores. Family Anatidae. The Whistler... by Eugene S M Haines https://www.rawpixel.com/image/14256893/photo-image-cartoon-art-postage-stampFree Image from public domain licenseClass II, Order VI, Natatores. Family Anatidae. The Red Breasted Sheldrake. by Eugene S M Haines https://www.rawpixel.com/image/14256366/photo-image-penguin-frame-personFree Image from public domain licenseBay View, from Montgomery and Unions Sts., S.F. by Carleton Watkins https://www.rawpixel.com/image/14257680/bay-view-from-montgomery-and-unions-sts-sf-carleton-watkinsFree Image from public domain licenseLooking up the South Fork from the top of the Vernal Fall, Yosemite Valley, Mariposa County, Cal. by Carleton Watkins https://www.rawpixel.com/image/14255831/photo-image-plant-tree-artFree Image from public domain licenseMonk's Rock, Strawberry Valley. by Lawrence and Houseworth https://www.rawpixel.com/image/14256656/monks-rock-strawberry-valley-lawrence-and-houseworthFree Image from public domain licenseDe maan (c. 1857 - c. 1862) by Warren de la Rue and Beck and Beck Smith https://www.rawpixel.com/image/13758453/maan-c-1857-1862-warren-rue-and-beck-and-beck-smithFree Image from public domain license