Samuel McHarry was the author of an early American work on distilling. Very little is known about his life: his birth and death years and his educational background cannot be verified in publicly available sources. What can be confirmed is that in 1809 he published The Practical Distiller, the only work by him held in this collection. The book was addressed to distillers and small-scale producers of the time and dealt with the practical operations of distillation, belonging to the genre of hands-on technical manuals rather than theoretical treatises. Judging from the surviving information, McHarry's writing emphasizes the transmission of experience and step-by-step procedures, with a direct and operation-oriented style that reflects how knowledge of raw-material handling, equipment use and production processes was accumulated in the early nineteenth-century American distilling trade. Because public information is limited, details of his life, his other writings and the contemporary circulation of his work remain unclear, and scholarly study devoted to him and his book is relatively scarce; his contribution is known mainly through The Practical Distiller.