Extremely rare first edition of “Report on the Epidemick Cholera Morbus, as it visited the territories subject to the Presidency of Bengal, in the Years 1817, 1818, and 1819” by James Jameson, Assistant Surgeon and Secretary to the Medical Board. Printed in Calcutta, 1820, by A.G. Balfour, Government Gazette Press, No. 1 Mission Row. This official government report represents one of the earliest systematic investigations into the devastating cholera epidemic that swept through India in the early 19th century—marking the beginning of the First Cholera Pandemic (1817–1824). Compiled under government orders, the report documents the spread, symptoms, and mortality of the disease across Bengal and surrounding provinces, providing valuable insight into early colonial public health administration and epidemiology. Significance: This 1820 Calcutta-printed report is an exceptionally scarce medical and colonial document, preceding the Western recognition of cholera as a global health threat. All pages and tables intact and present.