There are 3 titles associated with this firm.

@book{ wphp_14519
  author={Radcliffe,Ann},
  year={1834},
  title={The Mysteries of Udolpho. A Romance. Interspersed with Some Pieces of Poetry. In Three Volumes. By Ann Radcliffe.},
  publisher={J. and B. Williams},
  address={Exeter},    }
@book{ wphp_18922
  author={Opie,Amelia},
  year={1836},
  title={Illustrations of lying, in all its branches. By Amelia Opie},
  publisher={J. and B. Williams},
  address={Exeter},    }
@book{ wphp_15214
  author={Porter,Anna Maria},
  year={1836},
  title={The Hungarian Brothers. In Two Volumes. By Miss Ann Maria Porter.},
  publisher={J. and B. Williams},
  address={Exeter},    }