- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileSM - Salt marsh
- 16 more...
- ItemSM19 - Edge of extending sward
- ItemSM20 - Glyceria extending on silt
- ItemSM21 - Incipient depression pans
- ItemSM22 - Incipient pan
- ItemSM23 - Young channel
- ItemSM24 - Deep narrow channel
- ItemSM25 - Formation of channel pans
- ItemSM26 - Chain of 4 channel pans
- ItemSM27 - Chain of channel pans
- 57 more...