- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileSM - Salt marsh
- 6 more...
- ItemSM7 - Edge of Juncus maritimus zone
- ItemSM8 - Juncus maritimus zone
- ItemSM9 - Salicornia zone
- ItemSM11 - Escarpment edge of sward
- ItemSM12 - Glandyfi end
- ItemSM13 - Scarp
- ItemSM15 - Two scarps
- ItemSM16 - Scarp showing reconstruction of sward
- ItemSM17 - Scarp along river edge
- 67 more...