The first records of Vulci is in the Fasti Capitolini ca 280 BC.
See:
- Luisa Banti: A Companion to the Etruscans, University of California Press, 1973
- http://www.mariamilani.com/ancient_civilisation_civilization/vulci.htm
- http://www.mysteriousetruscans.com/velch.html
- George Dennis: The Cities and Cemeteries of Etruria, Cambridge University Press, 2010