Have a toothache? Come to the dentist to be treated.

At one time, COSI did give tours here, and showed guests how to make their own toothpaste. COSI volunteers also demonstrated the drill, which had a foot pedal.[1]

Credit: Upp Family, COSI's last day

Street of Yesteryear

OWalk back to the street.

[1] Thank you Jennie Keplar for information about the room.