Harvey (1950) is a film starring Jimmy Stewart as Elwood P. Dowd. In the film, Dowd's best friend is a six-foot tall invisible rabbit named Harvey. Harvey is actually a pooka[?], a mischievous magical creature.
... the fourteenth and fifteenth
centuries, and with the "Confessions" of Augustine
and John Bunyan's Pilgrim's Progress it occupies a
front rank, if not the foremost ...