OK as promised, here's the info on the folk song books I got from Barnes and Noble:"Traditional Folk Songs and Ballads of Scotland" (in 3 volumes) by John Loesberg, published by Ossian. They have main offices in Cork, Edinburgh, Loughborough, and Loudon (New Hampshire).
I got mine from Barnes and Noble in about October 1996 for about US$15. I don't know which catalogue it was because I get everything rather late here in Italy.
We have really used these books quite extensively (e.g., Burns Night, preapring for St Patrick's Day gigs). We use them for lyrics (my wife and I), guitar chords (me) and melody lines for flute or penny whistle (my daughter). They also include some (limited) historical notes on many of the songs.
We highly recommend them.
Jeff Walker Aviano, Italy