- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileSM - Salt marsh
- 19 more...
- 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
- ItemSM29 - Compound pan
- ItemSM30 - Formation of compound pan
- ItemSM31 - Incomplete formation of compound pan
- 54 more...