Mark: Thanks for the lead. I found a copy of Journey to Freedom through Bibliofind.com and just had the order confirmed.
How could we have failed to mention (or have I simply overlooked it in the earlier postings) Bertrand Bronson's The Singing Tradition of Child's Popular Ballads? The original four volumes may cost an arm and a leg these days (ask Bruce O.), but this paper bound one-volume condensation should be affordable, if one could find a copy. Princeton press, I think.
Karl Dallas published two good collections through Wolfe Publishing, Ltd., in London: The Cruel Wars, 100 Soldiers' Songs from Agincourt to Ulster and One Hundred Songs of Toil, 450 Years of Workers' Songs, with words, tunes, and suggested guitar chords. The first one included a version of "That Bloody War" that I collected in Tennessee from Abe Trivett. (page 172).