There are 2 titles associated with this firm.

@book{ wphp_11815
  author={Roberts,Margaret},
  year={1804},
  title={The Telescope; or, Moral Views for Children.},
  publisher={},
  address={London},    }
@book{ wphp_11811
  author={Roberts,Margaret},
  year={1806},
  title={Moral Views; or the Telescope, for Children. The Second Edition.},
  publisher={},
  address={London},    }