Walter Baade

[1995] Walter Baade, Observational Astrophysicist, (1): The Preparation 1893-1931 ; Donald E. Osterbrock ; Journal for the History of Astronomy 26 (1995) p. 1 [lien]
[1997] Walter Baade, Observational Astrophysicist, (3): Palomar and Göttengen 1948-1969(Part A) ; Donald E. Osterbrock ; Journal for the History of Astronomy 28 (1997) p. 283 [lien]
[1998] Walter Baade, observational astrophysicist, (3): Palomar and Göttingen 1948 - 1960 (Part B). ; D. E. Osterbrock ; Journal for the History of Astronomy 29 (1998) p. 345 [lien]