The Boxcar Children #1 by Gertrude Chandler Warner*

My eight year old read this book to himself and loved it. 
Henry, Jessie, Violet and Benny live in a boxcar after their parents die in a car crash.  Henry finds odd jobs to support them.  But how long can these four children live on their own?
*Highly recommend.
Guided Reading Level: O (3rd grade)
-We own this book.