There are 9 titles associated with this firm.

@book{ wphp_18598
  author={More,Hannah},
  year={1818},
  title={The history of Hester Wilmot.},
  publisher={The Sunday and Adult School Union \& },
  address={Philadelphia},    }
@book{ wphp_19673
  author={Sherwood,Mary Martha},
  year={1819},
  title={The history of little Henry and his bearer. Second edition.},
  publisher={The Sunday and Adult School Union \& },
  address={Philadelphia},    }
@book{ wphp_18406
  author={Marshall,Elizabeth},
  year={1819},
  title={Ellen: a tale in three parts. By an American lady.},
  publisher={The Sunday and Adult School Union},
  address={Philadelphia},    }
@book{ wphp_19647
  author={Sherwood,Mary Martha},
  year={1819},
  title={History of Emily and her brothers. By Mrs. Sherwood, author of "Little Henry and his bearer," &c. First American Edition.},
  publisher={The Sunday and Adult School Union},
  address={Philadelphia},    }
@book{ wphp_19652
  author={Sherwood,Mary Martha},
  year={1819},
  title={History of Henry Fairchild and Charles Trueman.},
  publisher={The Sunday and Adult School Union \& },
  address={Philadelphia},    }
@book{ wphp_19672
  author={Sherwood,Mary Martha},
  year={1819},
  title={The history of little Henry and his bearer.},
  publisher={The Sunday and Adult School Union \& },
  address={Philadelphia},    }
@book{ wphp_19673
  author={Sherwood,Mary Martha},
  year={1819},
  title={The history of little Henry and his bearer. Second edition.},
  publisher={The Sunday and Adult School Union \& },
  address={Philadelphia},    }
@book{ wphp_18409
  author={Marshall,Elizabeth},
  year={1819},
  title={The life of Mary Mordant. By an American lady.},
  publisher={The Sunday and Adult School Union},
  address={Philadelphia},    }
@book{ wphp_18425
  author={Marshall,Elizabeth},
  year={1819},
  title={The vicar's garden, or, The Greek medal. By an American lady.},
  publisher={The Sunday and Adult School Union \& },
  address={Philadelphia},    }