Cornell University Library:
Cologne Cathedral. North Portal Tympanum
Cornell University Library:
Cologne. Sankt Aposteln Church
Cornell University Library:
Cologne Cathedral. Panoramic View of Interior
Cornell University Library:
Cologne. Rathaus
Cornell University Library:
Cologne Cathedral. Main Portal Tympanum
Cornell University Library:
Cologne Cathedral. Tympanum
Cornell University Library:
Detail, Cologne Cathedral Tower
Cornell University Library:
Cologne. Sankt Maria im Kapitol
Cornell University Library:
Terra Cotta Urns from Ernst March's Charlottenburg Factory