Considerations upon the art of mining to which are added, reflections on its actual state in Europe, and the advantages which would result from an introduction of this art into the United States - Keating, William Hypolitus (M. Carey and Sons, 1821)
Goldsmiths'-Kress no. 23167.10. - OCLC, 17154211. - Reproduction of original from Widener Library, Harvard University