Helen Cresswell

Ordinary Jack is a novel by Helen Cresswell, the first book in the Bagthorpe Saga.

Absolute Zero is a 1978 children's novel by Helen Cresswell, the second book in the Bagthorpe Saga.

Bagthorpes Unlimited is the third children's novel in The Bagthorpe Saga, a series by author Helen Cresswell. It was first published in 1978.