If you're referring to Raymond Francois's Ye Yaille, Chere!, you can find it on Amazon.com. See link #2. The list price is $40, but Amazon offers it for $30. Plus, there are currently some used ones available for less money through Amazon's network of independent sellers.
One thing to remember about Francois's book, though, is that the musical scores are for violin, not accordion. That was a bit of a disappointment to me since I'm not overly educated in music and am not completely sure how to "convert" the scores for violin into something usable for accordion.
But the history of the songs and the lyrics make the book invaluable.
I like the Big Yellow Book very much.
The notation is for violin, but the stories and the lyrics are very useful. The stories are also nice to read. The lyrics are written down in French and English but you can handle with French, Maz ?
Buying that book, Maz.
Raymond’s book is an absolute treasure trove of info regarding Cajun music and IMO a must have especially if you are interested in learning lyrics, arrangements and little tid bits of info associated with the tunes. I bought my copy from amazon.com and bought a “used” one for about half the price. There was absolutely no noticeable difference b/w the “used” copy I received and a brand new one.