active 1904-1948, optical instrument maker (spectroscopes etc.), London, England Adam Hilger Limited 1904 - 1945
1903-1922, 1963-present, railway company and heritage railway, Wales Welshpool & Llanfair Light Railway 1903 - 1922
1906-1971, car manufacturer; aero engine manufacturer, Derby; Bristol, England, British Rolls-Royce Limited 1904 - 1973
1903-1972, archaeologist; palaeoanthropologist, Kenyan; British Leakey, Louis Seymour Bazett 1903 - 1972
active about 1904-1949, manufacturer of pharmaceutical and veterinary preparations, London, England Willows, Francis, Butler and Thompson Ltd 1904 - 1949
1903-1990, scientist, engineer and high-speed photographer, American Edgerton, Harold Eugene 1903 - 1990
1904-1973, supplier of wholesale chemicals & drugs, England, British British Drug Houses Limited 1904 - 1973
1904-1965, ornithologist, photographer, documentary filmmaker; writer, Scottish Rankin, Niall 1904 - 1965
1903-1960, Keeper of the Science Museum Library (1945-60), British Pledge, Humphrey Thomas 1903 - 1960