WIA GC/1902/321 | Wolfhagen, G. to Warburg, Aby 24/02/1902 | list of people who were sent copies of Warburg's article 'Bildniskunst', 18 in Germany, 15 in... |
WIA GC/1903/209 | Wolfhagen, G. to Warburg, Aby 13/08/1903 | supplies bibliographical information re Hohenzollern: A. Freiherr von Eberstein; Graf [Rudolf... |
WIA GC/1903/211 | Wolfhagen, G. to Warburg, Aby 16/11/1903 | lists titles of volumes of 'Recueil de Voyages': Recueil de Voyages et de Documents; Jean et... |
WIA GC/1904/236 | Wolfhagen, G. to Warburg, Aby 21/07/1904 | 'Bibliographisches Repertorium' is only available on cash payment; he regrets but cannot send a... |
WIA GC/1904/239 | Wolfhagen, G. to Warburg, Aby 16/11/1904 | the letter accompanying the detailed account of the differences |