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.
Musschenbroek portrait. Pieter van Musschenbroek erfgoedutrecht nl aspx id Author PDArt Pieter van Musschenbroek Rectores magnifici of the Universiteit Utrecht
Page 2023 Free-images.com. All images are Public Domain