Gertrude Chandler Warner was an American author, mainly of children's stories. She was most famous for writing the original book of The Boxcar Children and for the next 18 books in the series.

The Boxcar Children is a children's book series originally created and written by the American first-grade school teacher Gertrude Chandler Warner and currently published by Penguin Random House. It was previously published through Albert, Whitman and Company until 2023. Today, the series includes more than 160 titles, with more being released every year. The series is aimed at readers in grades 2–6.