Hi, Mark -
The only available Carl Sandburg recording is The Great Carl Sandburg: Songs of America, which doesn't have the song. I see in this thread (click) that I said in 2003 that I knew Sandburg had recorded it, but now I am advanced in age and don't remember how I knew that at the time.
I thought the song was printed in Sandburg's American Songbag, but I couldn't find it in the book.
-Joe-