There are 3 titles associated with this firm.

@book{ wphp_5736
  author={Nicholson,Margaret},
  year={1786},
  title={Authentic memoirs of the life of Margaret Nicholson, who attempted to stab His Most Gracious Majesty with a knife, ... on Wednesday, Aug. 2, 1786; ...},
  publisher={James Ridgeway},
  address={London},    }
@book{ wphp_731
  author={Plumptre,Anne},
  year={1810},
  title={A Narrative of a Three Years' Residence in France, Principally in the Southern Departments, from the Year 1802 to 1805: Including Some Authentic Particulars Respecting the Early Life of the French Emperor, and a General Inquiry into His Character. By Anne Plumptre. In Three Volumes.},
  publisher={Joseph Mawman [Poultry] \& James Ridgeway \& James Clarke \& Benjamin Crosby and Co. \& Constable and Co. \& },
  address={London},    }
@book{ wphp_457
  author={Johnstone,Christian Isobel},
  year={1836},
  title={True Tales of the Irish Peasantry as Related by Themselves; Selected by Mrs. Johnstone from the Report of the Poor-Law Commissioners},
  publisher={William Tait \& Simpkin, Marshall and Co. \& James Ridgeway \& John Cumming},
  address={Edinburgh},    }