The other parts are linked from here.
The Boy With Green Hair is a 1948 film starring Pat O'Brien, Barbara Hale and Dean Stockwell, TCM devotes some space to it. Coffee Coffee and More Coffee has a review. The New York Times review opens with
A novel and noble endeavor to say something withering against war on behalf of the world's unnumbered children who are the most piteous victims thereof is made in the RKO picture, "The Boy With Green Hair," a fantasy-drama in color, which opened at the Palace yesterday. But the fact that the effort is earnest is no surety of its success. For all its proper intentions, the gesture falls short of its aim.