the Detroit Observatory from 1892 to 1905. Other sons were named Samuel (second son) and Percival (fourth son); Percival Hall (1872–1953) was the second president of Gallaudet University from 1910 to 1946 (he himself was not deaf). She died at North Andover, Massachusetts, at age 61. The largest crater on Phobos, Stickney Crater, is named after her. Further reading References 1830 births 1892 deaths People associated with astronomy American suffragists American abolitionists 19th-century American mathematicians American women mathematicians 19th-century American women scientists People from Georgetown (Washington, D.C.) New York Central College faculty New York Central College alumni Women civil rights activists