Hertzsprung, Ejnar, 1873-1967.
Enjar Hertzsprung correspondence [microform], 1902-1967 (bulk 1920-1955).
The correspondence covers topics of astronomical and astrophysical research including double stars, occulation vacillatings, Magellan clouds, and the size and luminosity of the universe. Other topics include astronomical photography and spectroscopy, as well as awards, teaching, the meetings of scientific societies, including the International Astronomical Union and the Royal Astronomical Society, and most other aspects of Hertzsprung's professional life. Major correspondents include: Jan van der Bilt, H. H. M. Borregaard, van der Bos, Bosscha Sterrenwacht, Carlsbergfondet, G. Eberhard, W. S. Finsen, H. van Gent, P. Guthnick, Hamilton M. Jeffers, Jacobus C. Kapteyn, Gerard P. Kuiper, C. Luplau-Janssen, Willem J. Luyten, W. M nch, Axel V. Nielson, N. E. Norlund, Jan Hendrik Oort, P. Oosterhoff, Antoine Pannekoek, Richard Prager, P. van Rhyn, Jan Schilt, Frank Schlesinger, Karl Schwarzschild, Harlow Shapley, Willem de Sitter, Kai Strand, Bengt Strm̲gren, E. J. Voute, Adriaan J. Wesselink.
Astronomer (stellar spectra and distances). On the astronomy faculty at Universitt̃ Gt̲tingen (1909-1919); and Rijksuniversiteit te Leiden (1920-1944); on the staff of the observatory at Leiden (1914-1944), director (1935-1944).
Kapteyn, J. C. (Jacobus Cornelius), 1851-1922.
Kuiper, Gerard P. (Gerard Peter), 1905-1973
Luyten, Willem Jacob, 1899-1994
Oort, Jan Hendrik.
Pannekoek, Anton, 1873-1960
Schlesinger, Frank, 1871-1943.
Schwarzschild, K. (Karl), 1873-1916.
Shapley, Harlow, 1885-1972.
Strand, K. Aage (Kaj Aage), 1907-
Strm̲gren, Bengt, 1908-1987
International Astronomical Union
Royal Astronomical Society.
Astronomy -- Research.
Astronomy -- Societies, etc.
Astrophysics -- Research.
Astronomical photography.
Cosmology
Double stars.
Spectrum analysis.
Magellanic Clouds
Bos, Willem Henrik van den.
Eberhard, Gustav.
Guthnick, P.
Jeffers, Hamilton.
M nch, Wilhelm Hermann Johannes.
Voute, E. J.
Wesselink, Adriaan Jan, 1909-1995.
AIP-ICOS
American Institute of Physics. Niels Bohr Library & Archives. One Physics Ellipse, College Park, MD 20740, USA