Pittsburgh, PA: National Iron and Steel Publishing Co., 1881. 4to. (4) pp. [printed double-column]. Tables. Original printed wrappers (creased from folding; some wear at the edges). Item #35511
First separate edition. Emphasizes undeveloped mineral resources. Signed by the author on the front wrapper. Uncommon; OCLC locates five copies (Library of Congress, Library of Virginia, Lynchburg College, U. of Virginia, Virginia Historical Society). Haynes 20911.