La familia Ingalls 7x21

Charles and Albert travel with the Cooper family while on a delivery. A serious accident occurs while the Coopers are going down a steep hill. The Cooper parents are killed. Charles tries to find Cassandra and James a new home. When he can't find anyone to take them both in, he feels he has to send them to an orphanage. After thinking about this idea some more, Charles decides to take care of the kids himself for a short period.