Wikipedia
 
Margrethe Mather (born Emma Caroline Youngreen; 4 March 1886 - 25 December 1952) was an American photographer. She was one of the best known female photographers of the early 20th century. Initially she influenced and was influenced by Edward Weston while working in the pictorial style, but she independently developed a strong eye for patterns and design that transformed some of her photographs into modernist abstract art. She lived a mostly uncompromising lifestyle in Los Angeles that alternated between her photography and the creative Hollywood community of the 1920s and 1930s. In later life she abandoned photography, and she died unrecognized for her photographic accomplishments. "in artistic matters Margaret was, of course, the teacher, Edward (Weston) the pupil" -” Imogen Cunningham