One example is the classic children's book Heidi.

Today it is considered a classic children's fairy tale.

And many classic children's titles are in the public domain, meaning that the publisher does not have to pay author's royalties.

To a producer hoping to make a family film, a classic children's book is an attractive starting point.

You don't need Harry Potter to discover classic children's literature.

The film plays on the classic children's poem of the same name.

Now I lay me down to sleep is a classic children's bedtime prayer from the 18th century.

I tend to knock out Disney versions of classic children's stories.

Like the classic children's films of the past, it takes care to provide young audiences with thoughts and emotions that will make sense to them.

The Land appears to have been based on classic children's fantasy elements.