- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileSM - Salt marsh
- 46 more...
- ItemSM52 - Falling spring tide
- ItemSM53 - Falling spring tide
- ItemSM54 - Spring tide Ynyslas
- ItemSM55A - Salt marsh drawings
- ItemSM55B - Salt marsh drawings
- ItemSM56 - Salt marsh drawings
- ItemSM57 - Salt marsh drawings
- ItemSM58 - Salt marsh drawings
- ItemSM59 - Salt marsh drawings
- 27 more...