WIA GC/1902/190 | Hensel, Paul to Warburg, Aby 09/08/1902 | informs him that Mr. Schiff [Mario Schiff or Jacob H. Schiff?] can best be reached via Mrs. Ewald... |
WIA GC/1902/360 | Schiff, Mario to Warburg, Aby 21/08/1902 | on the coat of arms of Aragon and Castille, recommends authors and books on the subject |