- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileF - Fens
- 83 more...
- ItemF105 - Sagittaria
- ItemF106 - Phragmites in wind
- ItemF117 - Swallowtail butterfly
- ItemF118 - Top of sedge vegetation
- ItemF119 - Wicken Lode
- ItemF120 - Lord Nelson
- ItemF121 - Spirea ulmaria
- ItemF122 - Ragwort on rough pasture