There are 18 titles associated with this person.

@book{ wphp_20684
  author={Collom,William},
  year={1811},
  title={Bailey's Rittenhouse almanac, for the year of our Lord 1812. Being bissextile or leap year. Calculated by William Collom.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_20685
  author={Collom,William},
  year={1811},
  title={Bailey's Rittenhouse almanac, for the year of our Lord 1812. Being bissextile or leap year. Calculated by William Collom.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_20782
  author={Collom,William},
  year={1811},
  title={Carey's Franklin almanac, for the year 1812. Being Bissextile or leap year. Calculated by William Collom.},
  publisher={Mathew Carey [121 Chesnut Street]},
  address={Philadelphia},    }
@book{ wphp_20913
  author={Collom,William},
  year={1811},
  title={Kite's town & country almanac, for the year 1812 , being bessextile or leap year. The astronomical calculations by William Collom.},
  publisher={Benjamin and Thomas Kite \& },
  address={Philadelphia},    }
@book{ wphp_20686
  author={Collom,William},
  year={1812},
  title={Bailey's Rittenhouse almanac, for the year of our Lord 1813. Being the first after leap year. Calculated by William Collom.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_20687
  author={Collom,William},
  year={1812},
  title={Bailey's Rittenhouse almanac, for the year of our Lord 1813. Being the first after leap year. Calculated by William Collom.},
  publisher={Benjamin C. Buzby},
  address={Philadelphia},    }
@book{ wphp_20783
  author={Collom,William},
  year={1812},
  title={Carey's Franklin almanac, for the year 1813. Being the first after leap year. Calculated by William Collom.},
  publisher={Mathew Carey [121 Chesnut Street]},
  address={Philadelphia},    }
@book{ wphp_20914
  author={Collom,William},
  year={1812},
  title={Kite's town & country almanac, for the year 1813, being the first year after bissextile or leap year. Calculated by William Collom.},
  publisher={Benjamin and Thomas Kite \& },
  address={Philadelphia},    }
@book{ wphp_20688
  author={Collom,William},
  year={1813},
  title={Bailey's Rittenhouse almanac, for the year of our Lord, 1814. Being the second after leap year. Calculated by William Collom.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_20689
  author={Collom,William},
  year={1813},
  title={Bailey's Rittenhouse almanac, for the year of our Lord, 1814. Being the second after leap year. Calculated by William Collom.},
  publisher={Benjamin C. Buzby},
  address={Philadelphia},    }
@book{ wphp_20784
  author={Collom,William},
  year={1813},
  title={Carey's Franklin almanac, for the year 1814. Calculated by William Collom.},
  publisher={Mathew Carey [121 Chesnut Street]},
  address={Philadelphia},    }
@book{ wphp_20915
  author={Collom,William},
  year={1813},
  title={Kite's town and country almanac, for the year 1814. Being the second year after bissextile or leap year. Calculated by William Collom},
  publisher={Benjamin and Thomas Kite},
  address={Philadelphia},    }
@book{ wphp_20690
  author={Collom,William},
  year={1814},
  title={Bailey's Rittenhouse almanac, for the year of our Lord, 1815. Being the third after leap year. Calculated by William Collom.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_20719
  author={Sharp,Joshua and Collom,William},
  year={1814},
  title={Bennett & Walton's almanac, for the year of our Lord, 1815. Being the third after leap year. Calculated by Joshua Sharp.},
  publisher={Bennett & Walton \& },
  address={Philadelphia},    }
@book{ wphp_20916
  author={Collom,William},
  year={1814},
  title={Kite's town and country almanac, for the year 1815. Being the third after bissextile, or leap year. Calculated by William Collom.},
  publisher={Benjamin and Thomas Kite},
  address={Philadelphia},    }
@book{ wphp_20691
  author={Collom,William},
  year={1815},
  title={Bailey's Rittenhouse almanac, for the year of our Lord, 1816. Being bissextile, or leap year. Calculated by William Collom.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_20720
  author={Collom,William},
  year={1815},
  title={Bennett & Walton's almanac, for the year of our Lord 1816 . Being Bissextile, or Leap Year. Calculated by William Collom.},
  publisher={Bennett & Walton},
  address={Philadelphia},    }
@book{ wphp_20917
  author={Collom,William},
  year={1815},
  title={Kite's town and country almanac, for the year 1816. Being Bissextile, or Leap Year. Calculated by William Collom},
  publisher={Benjamin and Thomas Kite},
  address={Philadelphia},    }