Ogham Stones have various reference numbers. One of the most popular numbering schemes is the CIIC scheme by
R.A.S. Macálister. The Celtic
Inscribed Stones Project (
CISP) has stored a lot of cross references. The `Ogham Stones in the Wikimedia Universe` project extended these data and
published them openly. This tools shows the cross references of Ogham Stones. Just choose one starting point
and explore the data!