The book "The Science of Child Management" Virginia Bruce (Laura Weeks) is reading on the train, appears to have a brown paper dust jacket with the title labels on the front and spine stuck on.
Coincidentally, the seating material of the carriage in the train that Virginia Bruce (Laura Weeks) is travelling from the north to London is the same as the seating material in the train that John Carroll (Jeff Longstreet) and Virginia Bruce are heading south from London to Winchester.