Lehmann-Brockhaus, born 1909 in Unna, studied Art History and Philosophy at Marburg, Innsbruck and Göttingen. He received his Ph. D. in 1934 under Georg Graf Vitzhum in Göttingen, writing his dissertation on medieval art of the 10th century, published in 1935. From 1937 to 1945 he continued in his work on medieval art historical sources at the Bibliotheca Hertziana, Max Planck Institute, in Rome. In 1948 he became head of the library at the Zentralinstitut für Kunstgeschichte in Munich and in 1954 vice director of the institute as well as, at the same time, professor at the university of Munich. Since 1962 he was head librarian at the Bibliotheca Hertziana in Rome. In 1967 Lehmann-Brockhaus was appointed scientific member of the Max-Planck Society and also became director at the Bibliotheca Hertziana, headed by Wolfgang Lotz. After his retirement in 1977 he continued to live in Rome where he died in March 1999. Prior to his death, Lehmann-Brockhaus donated large part of his photographs to the Photographic Collection of the Bibliotheca Hertziana; a minor part is preserved at the University of Marburg.
Lehmann-Brockhaus, O. (1935). Die Kunst des X. Jahrhunderts im Lichte der Schriftquellen, Strassburg: Heitz
Lehmann-Brockhaus, O. (1938). Schriftquellen zur Kunstgeschichte des 11. und 12. Jahrhunderts für Deutschland, Lothringen und Italien. 2 voll.. Berlin: Deutscher Verein für Kunstwissenschaft
Lehmann-Brockhaus, O. (1955-1960). Lateinische Schriftquellen zur Kunst in England, Wales und Schottland vom Jahre 901 bis zum Jahre 1307. 5 voll.. München: Prestel
Lehmann-Brockhaus, O. (1983). Abruzzen und Molise: Kunst und Geschichte. München: Prestel
Lehmann-Brockhaus, O. (2017). Latium: Kunst und Kultur im Mittelalter. Roma: Biblioteca Hertziana
Nachlass Otto Lehmann-Brockhaus