Black and white photo of Carl Anderson working on his cloud chamber. A large wire coil is probably an electromagnet used to deflect charged particles. Anderson has short dark hair with a receding hairline, and wears a dark gray suit despite being at work in the lab. He cuts a pretty dashing figure.
https://files.mastodon.social/media_attachments/files/113/074/136/514/648/621/original/ba499e9375c36da5.jpeg