There are 3 titles associated with this person.

@book{ wphp_3329
  author={Harper,Elizabeth},
  year={1769},
  title={An extract from the journal of Elizabeth Harper.},
  publisher={s.n. [sine nomine]},
  address={London},    }
@book{ wphp_3416
  author={Harper,Elizabeth},
  year={1769},
  title={An extract from the journal of Elizabeth Harper.},
  publisher={},
  address={Bristol},    }
@book{ wphp_3470
  author={Harper,Elizabeth},
  year={1796},
  title={An extract from the journal of Mrs. Elizabeth Harper. By John Wesley, M. A. Late Fellow of Lincoln-College, Oxford.},
  publisher={},
  address={London},    }