WIA GC/1903/138 | Hagedorn, Anton Bernhard Carl to Warburg, Aby 05/02/1903 | informs Warburg in reply to his question that the books of the Hamburg Bank were not deposited in... |
WIA GC/1903/139 | Hagedorn, Anton Bernhard Carl to Warburg, Aby 11/03/1903 | information re cellarman ['Weinküper'] Johann Hinrich Warburg who was granted citizenship in... |
WIA GC/1904/240 | Nirrnheim, Hans to Warburg, Aby 07/01/1904 | Dr. Anton Bernhard Carl Hagedorn asks Warburg to have a look at the old painting in the state... |
WIA GC/1904/241 | Nirrnheim, Hans to Warburg, Aby 16/01/1904 | Dr. Anton Bernhard Carl Hagedorn was so interested in Warburg's comment on the painting that he... |
WIA GC/1905/212 | Hagedorn, Anton Bernhard Carl to Warburg, Aby 19/10/1905 | sends apologies for not attending the congress of the 'Verein für Volkskunde'; thanks him for a... |