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4. Proofs of the origin of the yellow fever, in Philadelphia & Kensington: in the year 1797, from the domestic exhalation ; and from the foul air of the snow Navigation, from Marseilles : and from that of the ship Huldah, from Hamburgh, in two letters, addressed to the governor of the Commonwealth of Pennsylvania

7. An account of the contagious epidemic yellow fever, which prevailed in Philadelphia in the summer and autumn of 1797: comprising the questions of its causes and domestic origin, characters, medical treatment, and preventives