Or just the earlier works have been forgotten. It tends to surprise people when I mention the 1939 Wizard of Oz movie (one of the first(?) to showcase color and

Or just the earlier works have been forgotten. It tends to surprise people when I mention the 1939 Wizard of Oz movie (one of the first(?) to showcase color and still known for that because of the transition) was an adaptation of just the first book of an older series.