- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series3 - Photographic collections
- Subseries1 - Glass plate negatives
- FileG - General (unclassified)
- 21 more...
- ItemG22 - [Der Bodensee]
- ItemG23 - [Plate III. A cypress swamp]
- ItemG24 - [unknown]
- ItemG25 - [unknown]
- ItemG26 - [Diagram]
- ItemG27 - [Photograph of mature tree]
- ItemG28 - [Photograph of mature tree]
- ItemG29 - [Photograph of trees]
- ItemG30 - [Photograph of tree]
- 75 more...