Andrés, I can add to the list the Irish Songbook 75 Songs - The Clancy Brothers and Tommy Makem, available on the internet from bookstore websites. It includes some Scottish songs, too, such as "I Once Loved A Lass" and "Ar Fol Lol Lol O". More suggestions, "Johnny I Hardly Knew Ye", "The Bard of Armagh" (same family of songs as the American "Streets of Laredo").

If you can find a copy of the Folk Songs of North America, Alan Lomax, there are sections of songs such as "Lonesome Love Songs" - Fair and Tender Ladies, Black is the Colour, etc. and "White Spirituals" - Way Over In The Heavens, - other types like Sixteen Tons and Dark as a Dungeon, railroad songs, African American Spirituals from the south, work songs, blues.... That book would be a good source for you.

alice flynn