AVE8890414: Incandescent light bulb glows in socket on table. / Bridgeman Images

AVE8890416: Men picking cotton in field. / Bridgeman Images

AVE8890420: Hands with match lights gaslight wall fixture near portrait of woman. Hands place glass cover on gaslight wall fixture. / Bridgeman Images

AVE8890421: Candle burning on table by jugs. / Bridgeman Images

AVE8891022: A bowl of salad tossed with wooden salad spoon and fork. / Bridgeman Images

AVE8891026: 1960s: On the deck of a ship, sawdust pours out of a funnel. A sailor turns a crank handle. / Bridgeman Images

AVE8891030: 1960s: A millipede wriggles in dirt. / Bridgeman Images

AVE8891031: 1960s: A penny. / Bridgeman Images

AVE8891032: 1960s: Sea creature on bottom of water. / Bridgeman Images

AVE8891036: 1960s: Workers stand on gantry and look over gears of tumblers rolling logs at paper mill. / Bridgeman Images

AVE8891037: 1960s: A type of worm in tank. Person prods worm with rod. Worm moves a bit. / Bridgeman Images

AVE8891040: 1960s: Man cuts a felled tree with a chainsaw. / Bridgeman Images

AVE8891041: 1960s: Man carries a ewe past his tent on a mountainside. Man waves at camera. / Bridgeman Images

AVE8891059: 1960s: Horse walks down cobblestone street. / Bridgeman Images

AVE8891069: 1960s: Man paints in park. / Bridgeman Images

AVE8891072: 1960s: Cowboy herds sheep across pasture. / Bridgeman Images

AVE8891073: 1960s: woman standing at lab table talks to seated men and women while pointing to lab apparatus with glassware and stands / Bridgeman Images

AVE8891074: 1950s: A person holds down a piece of paper with lines of handwriting on it and crosses out a word with a pencil, writing another word over it. / Bridgeman Images

AVE8891078: 1950s: Men unload vegetables in wooden crate from boat on river to shore. / Bridgeman Images

AVE8891080: 1950s: Science lab with experiment simulating lungs inflating and deflating in flask. / Bridgeman Images

AVE8891090: 1960s: Man in his kitchen spinning the spin hygrometer, takes a reading. / Bridgeman Images

AVE8891091: 1950s: Man stands at top of hill after hiking, breathing visibly and looking at view. / Bridgeman Images

AVE8891093: Brazil 1970s: Group of people stand and play in crashing waves on a resort beach. / Bridgeman Images

AVE8891102: 1950s: Boy composes music at the pianoforte. / Bridgeman Images

AVE8891103: A person points to a piece of wood with a pencil. / Bridgeman Images

AVE8891104: Construction occurs on a lot with cabins on it. / Bridgeman Images

AVE8891106: 1950s: Science lab with experiment simulating lungs inflating and deflating in flask. / Bridgeman Images

AVE8891108: 1960s: Indigenous people in traditional clothing, old man trading with others. / Bridgeman Images

AVE8891112: 1950s: [upside down] Stone wall with yucca trees. Man in sombrero leads donkey. Woman carrying clay jar of water stops and talks to man. / Bridgeman Images

AVE8891116: 1960s: Logging camp at the edge of the river, logs floating in the river. / Bridgeman Images

AVE8891119: 1960s: Bear cubs crawl toward mother bear in zoo enclosure. / Bridgeman Images

AVE8894838: 1960s: Hands roll parchment and puts on desk. Hands remove tie and unroll parchment. Hands hold open parchment with fine print. / Bridgeman Images

AVE8894845: 1960s: Outside view of historic cathedral with large stained glass. / Bridgeman Images

AVE8894846: 1960s: Man in hat and cloak pounds nail into siding of building. Second man paints door. / Bridgeman Images

AVE8894848: 1960s: Outside view of historic cathedral with large stained glass. / Bridgeman Images

AVE8894854: 1960s: Black and white sketch of three horses. / Bridgeman Images