- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileNW - North Wales
- 13 more...
- ItemNW14 - Group
- ItemNW15 - River + rocks
- ItemNW16 - River later
- ItemNW17 - Epiphytic ferns
- ItemNW18 - Epiphytic ferns
- ItemNW19 - Tan-y-Bwlch
- ItemNW20 - Tan-y-Bwlch
- ItemNW21 - Stream near Llanbedr
- ItemNW23 - Cwmbrychan Lake
- 10 more...