There are 2 titles associated with this firm.

@book{ wphp_3691
  author={Devis,Ellin},
  year={1777},
  title={The accidence; or first rudiments of English grammar. Designed for the use of young ladies. With an appendix, Containing Examples of Grammatical Construction; of the Method of supplying the Elliptical Words; and of analyzing Sentences. Also Maxims and Reflections, by way of Exercises for Learners; and some occasional Remarrs and References. By Ellin Devis. The third edition with very considerable additions.},
  publisher={},
  address={London},    }
@book{ wphp_3690
  author={Devis,Ellin},
  year={1778},
  title={The infant's miscellany: or easy lessons, extracted from different authors. On a new plan. Intended to facilitate the attainment of the English language to the youngest readers, by teaching them not only to read, but likewise to understand clearly what they read.},
  publisher={},
  address={London},    }