This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Auguste Piccard ETH BIB Portr ALFL Johannes Meiner. depicted people Auguste Piccard depicted place Other date ca photo bw paper cardboard Hochformat cm Institution ETHBibliothek Bildarchiv object history exhibition history credit line accession number PortrALFL org epics Bildarchiv online ETH Bibliothek PDoldauto CH Auguste