Black and white photo of Irmgard Flügge-Lotz. She is wearing a polkadot blouse with a wide collar and a dark jacker, and looking at the camera. The blackboard behind her shows flow lines around an oblong object, and she is holding a similarly shaped object in her hand. It appears to be a smooth stone.
https://files.mastodon.social/media_attachments/files/112/797/133/509/344/653/original/2e1e50492089c429.jpeg