Dicho, I just found your Vintertime song in the DT, and while it cites Carl Sandburg as the source it's not either your song, exactly, or the one that I have the red vinyl disk by Sandburg whereof I spoke.The one I have and sing is essentially the first verse of the one in the DT, but starting "In de vinter, in de vintertime" rather than "valley green", and the third line is "And de vimmen in de vaud'ville" rather than "working in vaudeville", which doesn't scan very well in any case.
And Sandburg in my recording ends, "Ahh, vimmens! Ahhhh-ahhh ahh-ahh ahh-ahh mens!" Sort of a hymn-ending feeling to the tune of the ending.
Dave Oesterreich