- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileSM - Salt marsh
- 69 more...
- ItemSM74 - [Salt marsh - unlabelled]
- ItemSM75 - [Salt marsh - unlabelled]
- ItemSM76 - Borth negatives
- ItemSM77 - Borth negatives
- ItemSM78 - Borth negatives
- ItemSM78A - Borth negatives
- ItemSM79 - Borth negatives
- ItemSM80 - Borth negatives
- ItemSM81 - Borth negatives
- 4 more...