TIL that the lyrics to "Baa Baa Black Sheep" are not "Baa, baa, black sheep, have you any coal?" They are "Baa, baa,...

TIL that the lyrics to "Baa Baa Black Sheep" are not "Baa, baa, black sheep, have you any coal?" They are "Baa, baa, black sheep, have you any wool?" I always thought that Baa Baa Black Sheep was black with soot from working down in the coal mines, and now was having to carry the coal. I thought he was the original coal train.