WIA GC/1909/260 | Jonas, Emmy and Jonas Lilly to Warburg, Aby 11/09/1909 | they enjoy Florence enormously thanks to the good preparation through his lectures |
WIA GC/1922/19 | Bing, Gertrud to Warburg, Aby 26/07/1922 | detailed report of re-arrangements in the library, which sections were enlarged and reshelved etc... |
WIA GC/1922/190 | Warburg, Aby to Hertz, Clara 16/03/1922 | he cannot understand that Hertz forgot the library rule about indelible ink; did Miss Bing... |
WIA GC/1922/20 | Warburg, Aby to Bing, Gertrud 08/08/1922 | acknowledges receipt of a book by Werner; asks her to check the 'Bibliographie der deutschen... |