The Adventures of Huckleberry Finn has genre Family (Film genre) #395. Family (Film genre) #395 has examples: David and Goliath
[Human]: Do you know of a book like The Adventures of Huckleberry Finn? [Assistant]: Are you interested in Adventure? [Human]: Yes. [Assistant]: I recommend David and Goliath, its a  family film. Also Anne of Avonlea [Human]: I am looking for a book like it. 
Then you will probably like The Last Unicorn and Indian in the Cupboard also.