I think you might be able to find the whole thing for "I wonder as I wander, out under the sky, how Jesus our Savior did come for to die..." in a hymnal. Or you might find it under an anthology of Christmas Carols.

I got a kick about the robin walkin' to Missouri. My mom used to sing that one to me: I haven't thought about it in about 45+ years. Thanks Metchosin for sending in the words. HTF