Mortality [electronic resource] : An account of the baptisms and burials in the United Churches of Christ-Church and St. Peter's, / by Matthew Whitehead and John Cook, clerks---Joseph Dolby and James Barker, sextons ; -----Also, an abstract of the baptisms and burials of the various congregations in the city and suburbs of Philadelphia, from December 25, 1795, to December 25, 1796