circa 1850: Two men work at a lithographic printing press. (Photo by Hulton Archive/Getty Images) 人民 时间 视觉艺术 Press Men
circa 1850: Workers labour at the royal porcelain works, Worcester. (Photo by Hulton Archive/Getty Images) 人民 时间 视觉艺术 Porcelain Works
circa 1772: An illustration of popular hair styles of 1772, by D Ritchie. (Photo by Hulton Archive/Getty Images) 人的头发 人民 时间 Early Beehives
1791: An illustration/drawing showing the manner of catching fish by the spring hook. (Photo by Hulton Archive/Getty Images) 渔杆 时间 视觉艺术 Spring Hook Fishing
circa 1830: Two members of an arctic expedition led by Scottish polar explorer Sir John Ross look across a vast empty wilderness. (Photo by Hulton Archive/Getty Images) 探索 北极 黑色和白色 Arctic Vista
circa 1850: A Spanish woman serenades a friend on the guitar. (Photo by Hulton Archive/Getty Images) 吉他手 音乐 时间 Spanish Guitarist
circa 1834: A map of Greenland and Northern Canada showing the last voyage of Captain Sir John Ross (1777 - 1856). (Photo by Hulton Archive/Getty Images) John Ross 地图 苏格兰文化 艺术与娱乐 John Ross' Voyage