Vintage 1978 Star Trek Planet Ecnal's Dilemma Coloring Activity Book. Shop Stock Room Find. Released by Whitman in 1978, this fantastic 56 page colouring book features Star Trek The Original Series in an episode entitled Planet Ecnal's Dilemma, and features Captain Kirk, Mr Spock and the crew of the Enterprise on an original unique adventure story which is for you to color and to complete the activities. Shop Stock Room Find. Discovered in the store room of a closing down shop with a whole host of other books and annuals from a similar era. All Orders received before 4.00pm Mondays to Fridays are dispatched the same day.