Right here in the DT is as good a place as any. If the song or arrangement is copyright I'm sure it'll say so. Failing that there are thousands of song books out there on Ebay, EFDSS, recordings for sale on the Mustrad website. Take your pick. If you want to find a book on Ebay and then come back to us we'll be able to tell you if it's likely to contain what you're after.