[Washington. 1847]. 14pp. plus folding plate. Original printed wrappers, rear cover lacking, stitched as issued. Moderate staining to lower edge of text. Good. Item #WRCAM52028
Patent issued to Samuel G. Cornell of Greenwich, Ct. for the invention of "a new and useful improvement in lead pipe machinery." Includes the description of Cornell's improvement, as well as a plate illustrating such.