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.
Bredt Julius. Konrad Julius Bredt Mrz in Berlin September in Aachen scan from Journal of Chemical Education page Kauffman George PDold grainy lowresolution scan would appear to qualify as fair use The subject died over years ago No alternative image seems to be available Julius Bredt
Page 2023 Free-images.com. All images are Public Domain