An Celtlyver

Continental Celtic

Gaulish

www.omniglot.com/writing/gaulish.htm - Information and numbers.

Gaulish: Language, Writing, Epigraphy, by Mullen and Ruiz Darasse (2020)

Cisalpine Celtic: Language, Writing, Epigraphy, by Stifter (2020)

Celtiberian

www.omniglot.com/writing/celtiberian.htm - Information and alphabet.

Celtiberian: Language, Writing, Epigraphy, by Luján Lloris and Jordán Cólera

Lepontic

Cisalpine Celtic: Language, Writing, Epigraphy, by Stifter (2020)