WIA GC/1903/43 | Bossert, Helmuth Theodor to Warburg, Aby 26/07/1903 | he no longer owns the tapestry, mentioned by Justus Brinckmann to Warburg, showing courtly life... |
WIA GC/1911/143 | Bossert, Helmuth Theodor to Warburg, Aby 10/09/1911 | [Rudolf] Kautzsch informed him of Warburg's research into planets; Bossert himself has been... |
WIA GC/1911/144 | Warburg, Aby to Bossert, Helmuth Theodor 15/09/1911 | forwards his article on the Hausbuchmeister drawings [Maximilian article]; on the research re... |
WIA GC/1911/145 | Bossert, Helmuth Theodor to Warburg, Aby 21/09/1911 | thanks him for letter and offprints; returns one of the offprints with thanks; he knows the Block... |
WIA GC/1911/262 | Friedländer, Max J. to Warburg, Aby 07/01/1911 | he welcomes Warburg's wish to publish an article on the Hausbuchmeister in the Yearbook; he will... |