There are 7 books in this series.

Orphan Train, spanning between 1854 and 1929, is both a Triumph and Tragedy. This movement relocated abandoned and unwanted children in an attempt to give them a brighter and happier future. It moved around 300,000 lost children out of the major cities and towards the midwest.

Kline's book is fictional, but it's based on the very true history of thousands of children shipped to the Midwest. Kline joins NPR's Rachel Martin to discuss the history of the trains, how young girls were often passed over by families and the most surprising fact she learned from train riders.

Many orphan train children went to live with families that placed orders specifying age, gender, and hair and eye color.