ETH-BIB-Boniswil, Hallwyl mit Schloss, Seengen aus 700 m-Inlandflüge-L...
Public domain aerial photograph, no copyright restrictions image - Picryl description Walter Mittelholzer was a Swiss aviation pioneer and photographer. He was one of the first pilots to fly in the Swiss Alps ... More
ETH-BIB-Boniswil-Inlandflüge-LBS MH01-002907
Public domain aerial photograph, no copyright restrictions image - Picryl description Walter Mittelholzer was a Swiss aviation pioneer and photographer. He was one of the first pilots to fly in the Swiss Alps ... More
ETH-BIB-Dürrenäsch, Boniswil, Hallwyl, Schloss-Hallwyl, Seengen-Inland...
Public domain aerial photograph, no copyright restrictions image - Picryl description Walter Mittelholzer was a Swiss aviation pioneer and photographer. He was one of the first pilots to fly in the Swiss Alps ... More
ETH-BIB-Leutwil, Boniswil, Seengen-Inlandflüge-LBS MH01-002641
Public domain aerial photograph, no copyright restrictions image - Picryl description Walter Mittelholzer was a Swiss aviation pioneer and photographer. He was one of the first pilots to fly in the Swiss Alps ... More