- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileNW - North Wales
- 17 more...
- ItemNW18 - Epiphytic ferns
- ItemNW19 - Tan-y-Bwlch
- ItemNW20 - Tan-y-Bwlch
- ItemNW21 - Stream near Llanbedr
- ItemNW23 - Cwmbrychan Lake
- ItemNW24 - Sunset near Harlech
- ItemNW25 - Harlech Castle
- ItemNW26 - Harlech Castle
- ItemNW27 - River Glaslyn
- 6 more...