- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileS - Switzerland
- 17 more...
- ItemS21 - Davos Lake
- ItemS22 - Davos Lake
- ItemS25 - Davos Lake
- ItemS30 - Lichens on larch
- ItemS33 - Near Dishma Thal
- ItemS34 - Davos Valley
- ItemS37 - Wood
- ItemS38 - Tall spruces
- ItemS39 - Path through wood
- 18 more...