Heath, Laban. Heath’s Greatly Improved and Enlarged Infallible Government Counterfeit Detector, At Sight. 2nd ed. Boston, Mass. and Washington, D.C.: Laban Heath, 1866. 39 pp.
Heath was a New England engraver who had been involved in the engraving of paper currency. His pocket guide book provides the various ways by which counterfeit currency could be identified, including a variety of examples of engraved plates.