- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileS - Switzerland
- 22 more...
- ItemS34 - Davos Valley
- ItemS37 - Wood
- ItemS38 - Tall spruces
- ItemS39 - Path through wood
- ItemS40 - Spruces in snowstorm
- ItemS41 - Three bare larches
- ItemS42 - Small snow-covered spruces
- ItemS43 - Extreme end of platz
- ItemS46 - Woods & snow
- 13 more...