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:
Odhner. th century portrait of Willgodt Theophil Odhner SwedishRussian engineer and inventor en br Original source keldysh ru htm archive org keldysh ru htm archive link before author PDold Original upload log en Odhner bytes Greyhood no th century portrait of SwedishRussian engineer and inventor keldysh