Art, I just listened to the Carters' "Little Darlin' Pal of Mine" and then to "This land is Your Land" on the album of the same name. I don't think they are exactly the same. I listened to "When the World's on Fire" too and I would say "This Land" resembles both of them (although funnily enough, I don't think the two Carter songs resemble each other!).

Murray