Feldman, David, 1950- Who put the butter in butterfly? / David Feldman ; illustrated by Kassie Schwan. - 1st ed. - New York : Harper & Row, c1989. - xii, 209 p. : ill. ISBN: $15.95 LCCN: 91045032 Subjects--Topical Terms: English language--Etymology.English language--Terms and phrases.