| RefNo | Title |
| DF/ZOO/200/64/66 | Walker, Alfred O |
| DF/ZOO/252/1/13/85 | Walker, Alfred O (Maidstone) |
| DF/ZOO/252/1/1/12 | Herdman, Sir William Abbott (Liverpool) |
| DF/ZOO/252/1/7/73 | Walker, Alfred O (Maidstone) |
| DF/ZOO/252/1/12/50 | Walker, Alfred O (Maidstone) |
| DF/ZOO/252/1/5/67 | Walker, Alfred O (Maidstone) |
| DF/ZOO/252/1/7/74 | Walker, Alfred O (Maidstone) |
| DF/ZOO/252/1/10/53 | Walker, Alfred O (Maidstone) |
| DF/ZOO/252/1/15/50 | Walker, Alfred O (Maidstone) |
| DF/ZOO/252/1/1/45 | Walker, Alfred O (Maidstone) |
| DF/ZOO/252/1/3/81 | Walker, Alfred O (Maidstone) |
| DF/ZOO/252/1/10/51 | Walker, Alfred O (Maidstone) |
| DF/ZOO/252/1/10/52 | Walker, Alfred O (Maidstone) |