Der Hamburger Petri- (Grabower-) Altar und Meister Bertram von Minden

Published in 1916 by Alfred Rohde, this monograph serves as a scholarly examination of the Petri-Altar, or Grabower Altar, a foundational work of Northern German Gothic art attributed to Master Bertram of Minden. Produced during the height of the First World War, the work reflects the era's deep academic commitment to cataloging and preserving the heritage of the Kunsthalle Hamburg, where the altar has resided since its acquisition in the nineteenth century.

Alfred Rohde's analysis focuses on the stylistic transition of the late fourteenth century, contextualizing Master Bertram’s intricate narrative panels within the broader European movement toward artistic realism. The book was received as a serious contribution to medievalist historiography, documenting the altar's iconography and technical execution at a time when scholars were increasingly interested in defining the unique character of regional Hanseatic art.