What is the book Box Car children?

"The Boxcar Children" is the first book in a popular children's series of the same name, written by Gertrude Chandler Warner. The story follows four orphaned siblings – Henry, Jessie, Violet, and Benny – who, after their parents' death, choose to live independently in an abandoned boxcar rather than be separated and sent to live with different relatives. The books detail their adventures as they strive to maintain their independence, find work, and create a life for themselves while avoiding detection and dealing with various challenges. The series emphasizes themes of self-reliance, resourcefulness, and family loyalty.