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An essay on the malignant pestilential fever, introduced into the West Indian islands from Boullam, on the coast of Guinea, as it appeared in 1793, 1794, 1795, and 1796. Interspersed with observations ... tending to prove that the epidemic ... at Philadelphia, New-York, &c. was the same fever / By C. Chisholm. Public Domain Mark. Source: Wellcome Collection.