Scale 1:21,600; 1800 ft. to 1 in. Hand colored. Relief shown by contours. Shows mine entries and workings. Includes 3 cross sections, 4 "Columnar sections showing coal measures at Johnstown, Sonman &amp; Bennington," and inset "Map showing the geology of Cambria and adjoining counties ... " with cross section. Available also through the Library of Congress Web site as a raster image. AACR
Fulton, John; Cambria Iron Company; Julius Bien &amp; Co.
1876
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/76692513/">https://www.loc.gov/item/76692513/</a>