This movie is a classic; However, the film did not receive much money at the box office and received negative criticism in its majority in this the others are right, but it can be good, if you like the movie do not pay attention to negative criticism.
The box office and the criticism he received does not matter; what matters is that Richard Rich revived the story of Elwyn Brooks White adapting it in a good movie, but less box office and with bad reviews.
Review of The Trumpet of the Swan
