Proper motions of stars in the zone catalogue of 20,843 stars, 1900 : zones -40° to
-52° derived from photographs taken at the Royal observatory, cape of Good Hope /
under the dir. of H. Spencer Jones ... and J. Jackson. London: H. M. Stationery off.,
1936
http://authorities.loc.gov/, site consulté le 2011-09-21
Information trouvée : dates biographiques