Orphan Train Museum at the Union Pacific Railroad station, grand opening in 2007 at Concordia, Kansas. Children were placed throughout the United States and Canada.

The children were transported to their new homes on trains that were labeled "orphan trains" or "baby trains". This relocation of children ended in 1930 due to decreased need for farm labor in 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.

Between 1854 and 1929, over 200,000 children were placed out through this program. Trains from New York carried children to all 48 continental states and into parts of Canada and about 7,000 were placed in Kansas.