Central Pacific Railroad, California, from the series "Central Pacific Railroad, California" by Alfred A. Hart https://www.rawpixel.com/image/9029112/photo-image-person-art-paintingFree Image from public domain licenseUntitled (Central Pacific Railroad), from the series "Watkin's Pacific Railroad" by Alfred A. Hart https://www.rawpixel.com/image/8964963/photo-image-person-nature-united-statesFree Image from public domain licensePhoto collage including Viscountess Malder, Lady Beauclerk, Mrs. Astley, and Viscountess Holmesdale by Camille Silvy https://www.rawpixel.com/image/14255938/image-cartoon-face-framesFree Image from public domain licensePhoto collage of Lord Yarborough, Colonel Cuthbert Larking, and Major Alison https://www.rawpixel.com/image/14256855/photo-collage-lord-yarborough-colonel-cuthbert-larking-and-major-alisonFree Image from public domain licenseIndian peasant man holding twigs on his head by John Edward Saché https://www.rawpixel.com/image/14259118/indian-peasant-man-holding-twigs-his-head-john-edward-sacheFree Image from public domain licenseIndian peasant young woman holding twigs on her head by John Edward Saché https://www.rawpixel.com/image/14260582/indian-peasant-young-woman-holding-twigs-her-head-john-edward-sacheFree Image from public domain licenseAm. River and Canon from Cape Horn, River below Railroad 1,400 feet. 57 miles from Sacramento, No. 44 from the series… https://www.rawpixel.com/image/9012992/photo-image-person-art-paintingFree Image from public domain licenseRoad East of Station, at Auburn, No. 22 from the series "Central Pacific Railroad, California" by Alfred A. Hart https://www.rawpixel.com/image/8967204/photo-image-road-nature-united-statesFree Image from public domain license