The Boxcar Children is a children's book series originally written by an American school teacher Gertrude Chandler Warner. Today, the series includes nearly 160 titles, with more being released every year. This book is the one of those, translated to Farsi by Aida Moradi Ahani. Same the others of the series, this one is aimed at readers in grades 2–6.
In this story, the four orphan kids of the Alden family begin their adventure by making a home in a boxcar. Their goal is to stay together, and in the process they find a grandfather.