| RefNo | Title |
| DF/ZOO/235/1/1/5/203 | Riggenbach, F W |
| DF/TM/1/122 | Correspondence: Riggenbach; Rothschild |
| DF/TR/1/1/26/62 | Boulenger, [George] [Albert] |
| DF/ZOO/235/1/1/7/205 | Riggenbach, F W |
| DF/ZOO/235/1/4/1/38 | Riggenbach, F W |
| DF/TR/1/1/26/276 | Ihering, [Hermann] von |
| DF/TR/1/1/28/162 | Elder, Dempster & Co |
| DF/TR/1/1/25/461 | Union Discount Company of London |
| DF/TR/1/1/26/471 | Rosenberg, [William] [Frederick] [Henry] |
| DF/TM/1/156/20 | Oversize correspondence: Riggenbach |
| DF/TR/1/1/28/497 | Rosenberg, [William] [Frederick] [Henry] |
| DF/TR/1/1/25/390 | Rosenberg, [William] [Frederick] [Henry] |
| DF/TR/1/1/27/473 | Rosenberg, [William] [Frederick] [Henry] |
| DF/TR/1/1/29/280 | Hartert, Ernst |
| DF/TR/1/1/30/450 | Rosenberg, [William] [Frederick] [Henry] |
| DF/TR/1/1/28/138 | Davies, Turner & Co Ltd |