There are 2 titles associated with this firm.

@book{ wphp_7720
  author={Centlivre,Susanna},
  year={1784},
  title={The wonder! A woman keeps a secret. A comedy in five acts. Written by Mrs. Centlivre. Taken from the manager's book, at the Theatre-Royal, Covent-Garden.},
  publisher={Robert Butters},
  address={London},    }
@book{ wphp_7704
  author={Centlivre,Susanna},
  year={1790},
  title={The busy body. A comedy. Written by Mrs. Centlivre. Taken from the manager's book at the Theatre Royal Covent-Garden.},
  publisher={},
  address={London},    }