WIA GC/224
Königliche Bayerische Universitätsbibliothek Erlangen to Warburg, Aby 27/05/1918
they do not have a copy of the book by [Joh.] Copp [Copius]; the library of [Christian Gottlieb...
WIA GC/27842
Zucker, Markus to Warburg, Aby 01/04/1905
supplies bibliographical references fort the engraving 'Der große Satyr'; mentions [H.O.?] Lange...
WIA GC/8258
Warburg, Aby to Zucker, Markus 12/03/1914
photographic order of a Dürer drawing