The Railway Children by E Nesbit

The Railway Children is a children's book by Edith Nesbit, originally serialised in The London Magazine during 1905 and first published in book form in 1906. It tells the tale of children whose father is mysteriously taken away one night and they move with their mother to live in the country, where the railway and those who work and travel on it become the center of their lives.

When their father is sent away to prison, three London children move to the country where they keep busy preventing accidents on the nearby railway, making many new friends, and generally learning a good deal about themselves.