Original Celtic Irish texts?

From: michael_donne
Message: 12723
Date: 2002-03-18

What are the titles of the original Celtic Irish texts? Are all of
them available in English?

I mean texts that referred to pre-Christian Ireland (filtered through
Christian monks) like: Book of Invasions, Cattle Raid of Cooley,
Fionn cycle, etc?

What are the best English versions if I want to acquire a complete
collection?