There are 2 titles associated with this firm.

@book{ wphp_5533
  author={Unknown,},
  year={1786},
  title={The beauties of Mrs. Siddons: or, a review of her performance of the characters of Belvidera, Zara, Isabella, Margaret of Anjou, Jane Shore,-And Lady Randolph; in letters from a lady of distinction, to her Friend in the Country.},
  publisher={John Strahan},
  address={London},    }
@book{ wphp_4789
  author={West,Jane},
  year={1788},
  title={The humours of Brighthelmstone. By J. West.},
  publisher={},
  address={London},    }