Sarah Louise Arnold (February 15, 1859 – February 26, 1943) was an American educator, author, and suffragist. She was better known in the schoolroom and among teachers than any other woman connected with education in her day. In 1902, she became the first dean of Simmons College. In 1925, she became the national president of the Girl Scouts. Arnold was also a writer of books for teachers and texts for schools. Source: Wikipedia (en)