University of Oxford. Observatory(38)
Holden, Edward S. (1846-1914)(32)
Mount Wilson Solar Observatory, Carnegie Institute of Washington(16)
Plummer, Henry Crozier (1875-1946)(16)
Maunder, Edward Walter (1851-1928)(9)
The British Astronomical Association (London)(9)
Yale University. Observatory(8)
Barnard, Edward Emerson (1857-1923)(6)