Russell, Henry Norris, 1877-1957 (Personal Name)
LCCN 33-36365: His The composition of the stars, 1933 (hdg.: Russell, Henry Norris, 1877-1957; usage: Henry Norris Russell)
LC data base, 11-17-86 (hdg.: Russell, Henry Norris, 1877-1957; usage: Henry Norris Russell)
Wikipedia, April 29, 2014 (Henry Norris Russell; born October 25, 1877 in Oyster Bay, N.Y.; died February 18, 1957 in Princeton, N.J.; astronomer who, along with Ejnar Hertzsprung, developed the Hertzsprung-Russell diagram (1910). In 1923, working with Frederick Saunders, he developed Russell-Saunders coupling which is also known as LS coupling)