Browsing Geologic Atlas of the United States by Author "Clapp, Frederick G. (Frederick Gardner), 1879-1944."

Now showing items 1-3 of 3

    • Amity folio, Pennsylvania 
      Clapp, Frederick G. (Frederick Gardner), 1879-1944. (Geological Survey (United States), 1907)
    • Barnesboro-Patton folio, Pennsylvania 
      Campbell, Marius R. (Marius Robinson), 1858-1940.; Clapp, Frederick G. (Frederick Gardner), 1879-1944.; Butts, Charles, 1863-1946. (Geological Survey (United States), 1913)
    • Rogersville folio, Pennsylvania 
      Clapp, Frederick G. (Frederick Gardner), 1879-1944. (Geological Survey (United States), 1907)