Three Letters Wrote from Boston in New-England to a Correspondent in the Gorbels of Glasgow, Viz. ; Two of Them from a Young Man, who Went from Glasgow about Four Years Ago ... the Third from the Reverend Mr. John Moorhead a Presbyterian Minister in Boston ; the Whole Giving an Account of ... the Conversion of Thousands of Souls by the Ministry ... of the Reverend Mr. George Whitefield, and the Reverend Mr. Gilbert Tennent ...