The One Ring was created by Sauron in the Second Age. It didn’t leave his possession until Isildur took it from him. In between and after, the Ring traveled through Middle Earth and eventually transferred between bearers. Emil Johansson has created a timeline of events showing the the Ring’s path and location during various events in Middle Earth history.
Go ahead and drool – this chart is worthy of it.
Hit the link below to see the timeline at full size.