There are many classic books available for free on Kindle. Allow me to highlight a few:
Anna Karenina by Leo Tolstoy
Dracula by Bram Stoker
Great Expectations by Charles Dickens
Gulliver's Travels by Jonathan Swift
Les Miserables by Victor Hugo
Little Women by Louisa May Alcott
Moby Dick by Herman Melville
Northanger Abbey by Jane Austen
Oliver Twist by Charles Dickens
Moby Dick by Herman Melville
Northanger Abbey by Jane Austen
Oliver Twist by Charles Dickens
The Picture of Dorian Gray by Oscar Wilde
The Secret Garden by Frances Hodgson Burnett
The Strange Case of Dr. Jekyll and Mr. Hyde by Robert Louis Stevenson
A Tale of Two Cities by Charles Dickens
The Time Machine by H. G. Wells
The War or the Worlds by H. G. Wells
White Fang by Jack London
Wuthering Heights by Emily Bronte
Hopefully this will get you started with some summer reading or getting your child's reading list together for next year. There are many more. Look under Free Kindle Books: Fiction Classics to find others.