| RefNo | Title |
| DF/ENT/311/199 | Williams, R C: American Lycaenid genitalia. Drawings by R C Williams 31 x 23 cm or smaller |
| DF/TM/1/32/13 | Correspondence B: Bethune-Baker; Bianchi; Bishop & Company |
| DF/TR/1/1/26/22 | Baker, George [Thomas] Bethune |
| DF/TM/1/11/10 | Correspondence B: Bentley; Besserer; Bethune-Baker |
| DF/TR/1/1/29/31 | Baker, [George] [Thomas] Bethune |
| DF/TR/1/1/31/35 | Baker, [George] [Thomas] Bethune |
| DF/TM/1/54/7 | Correspondence B: Stuart Baker; Bethune Baker; Trevor-Battye |
| DF/TR/1/1/28/33 | Baker, George [Thomas] Bethune |
| DF/TM/1/48/5 | Correspondence B: Baer; Baker; Bethune-Baker; Stuart Baker |
| DF/TR/1/1/27/20 | Baker, George [Thomas] Bethune |
| DF/TR/1/1/30/30 | Baker, [George] [Thomas] Bethune |
| DF/TR/1/1/25/20 | Baker, [George] [Thomas] Bethune |
| DF/TR/1/1/24/19 | Baker, George [Thomas] Bethune |
| DF/TM/1/61/7 | Correspondence B: Bethune Baker; Baker |
| DF/ENT/332/1/48 | Querci, Orazio |
| DF/TM/1/69/7 | Correspondence B: Baer; Baker; Baker; Bastelberger; Baty Bergne & Co |
| DF/TM/1/25/13 | Correspondence B: Besserer; Bethune-Baker; Bevis |