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Hertzsprung, Ejnar, 1873-1967.
Ejnar Hertzsprung letters, 1949.
Letters to Gerard Peter Kuipper and Eastman Kodak on ordering plates for photovisual photography of double stars.
Astronomer (steller spectra and distances). On the astronomy faculty at UniversittĖƒ GtĖ˛tingen, 1909-1919; and Rijksuniversiteit te Leiden, 1920-1944; on the staff of the observatory at Leiden, 1914-1944, director, 1935-1944.
Kuiper, Gerard P. (Gerard Peter), 1905-1973
Eastman Kodak Company.
Astronomy
AIP-ICOS
American Institute of Physics. Niels Bohr Library & Archives. One Physics Ellipse, College Park, MD 20740, USA
Catalog