1. A sermon, preached September 20th, 1793: a day set apart, in the city of New-York, for public fasting, humiliation and prayer, on account of a malignant and mortal fever prevailing in the city of Philadelphia Author(s): Mason, John M. (John Mitchell), 1770-1829 Publication: New-York : Printed and sold by Samuel Loudon & Son, MDCCXCIII [1793] Subject(s): Yellow FeverPhiladelphia