- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileF - Fens
- 19 more...
- ItemF20 - Butomus umbellatum
- ItemF21 - Phragmites + Cladium in lab
- ItemF23 - Wicken Poor's Fen
- ItemF24 - Nymphaea alba
- ItemF25 - Nuphar luteum
- ItemF27 - Utrieularia vulgaris (2)
- ItemF29 - Dernford Fen
- ItemF30 - Peat Stack
- ItemF31 - Peat Trenches
- 63 more...