The young man's best companion, [electronic resource] or, Mathematical compendium, containing a great variety of very useful rules & examples in mathematics for the merchant, clerk, accountant & the mechanic ... by Amos W. Warren.
Electronic text and image data. Ann Arbor, Mich. : University of Michigan, Digital Library Initiatives, 2000. Includes both TIFF files and keyword searchable text. [Making of America] This volume is made possible by a grant from the Andrew W. Mellon Foundation as part of Making of America IV: the American voice, 1850-1877.