- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileNW - North Wales
- 10 more...
- ItemNW11 - Black rocks
- ItemNW12 - Black rocks
- ItemNW13 - Group
- ItemNW14 - Group
- ItemNW15 - River + rocks
- ItemNW16 - River later
- ItemNW17 - Epiphytic ferns
- ItemNW18 - Epiphytic ferns
- ItemNW19 - Tan-y-Bwlch
- 13 more...