1979 "First Edition" stated on copyright page; signed by Rosalie Faller inside front to "a very good friend" (pic); Vantage Press; smaller hardbound; very good condition of book and dust jacket.
 
from dust flap -
Polliwogs do grow up to become frogs - but not all frogs are either yellow with purple spots, or purple with yellow spots - or yellow or purple, either, for that matter.
 
Polli and Woggy are: they're polka dot frogs, that is, and their unusual coloring is only the first in a series of strange and humorous phenomena...