Add to ORKGValley of ten mile creek, near Ten-Mile, Pennsylvania. (1904)GrayscaleClapp Nitrate Negative, Box 1
Coal pit & F.W. DeWolf, Greene Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Coal pit & F.G.C. [Frederick Gardner Clapp], Greene Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Ni...
Road washed out, Cambria Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Cultivated hillside, Washington Co., Pennsylvania. (1904)GrayscaleClapp Nitrate Negative, Box 1
Waterfall over Benwood L., ravine tributary to Meigs Ck. [creek], Washington Co., Pa. [Pennsylvania]...
Topography, Greene Co., Pennsylvania. Mixed. (1904)GrayscaleClapp Nitrate Negative, Box 1
Terrace of Waynesburg S.S., Rich hill two, Greene Co., Pennsylvania. U.S. - disc. (1904)GrayscaleCla...
Washington Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Washington field, Washington Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Clearfield Ck. [creek] nr [near] Ashville, Cambria Co., Pennsylvania. (1904)GrayscaleClapp Nitrate N...
Little Yellow Creek, Cambria Co., Pennsylvania. (1904)GrayscaleClapp Nitrate Negative, Box 1
Burning gas well, Washington Co., Pennsylvania. (1904)GrayscaleClapp Nitrate Negative, Box 1
Susquehanna R. [river], Curwensville, Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box...
Brobaker Run, Cambria Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Reservoir No. 4, near Washington, Pennsylvania. (1904)GrayscaleClapp Nitrate Negative, Box 1
Coal pit & F.W. DeWolf, Greene Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Coal pit & F.G.C. [Frederick Gardner Clapp], Greene Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Ni...
Road washed out, Cambria Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Cultivated hillside, Washington Co., Pennsylvania. (1904)GrayscaleClapp Nitrate Negative, Box 1
Waterfall over Benwood L., ravine tributary to Meigs Ck. [creek], Washington Co., Pa. [Pennsylvania]...
Topography, Greene Co., Pennsylvania. Mixed. (1904)GrayscaleClapp Nitrate Negative, Box 1
Terrace of Waynesburg S.S., Rich hill two, Greene Co., Pennsylvania. U.S. - disc. (1904)GrayscaleCla...
Washington Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Washington field, Washington Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Clearfield Ck. [creek] nr [near] Ashville, Cambria Co., Pennsylvania. (1904)GrayscaleClapp Nitrate N...
Little Yellow Creek, Cambria Co., Pennsylvania. (1904)GrayscaleClapp Nitrate Negative, Box 1
Burning gas well, Washington Co., Pennsylvania. (1904)GrayscaleClapp Nitrate Negative, Box 1
Susquehanna R. [river], Curwensville, Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box...
Brobaker Run, Cambria Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Reservoir No. 4, near Washington, Pennsylvania. (1904)GrayscaleClapp Nitrate Negative, Box 1
Coal pit & F.W. DeWolf, Greene Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1
Coal pit & F.G.C. [Frederick Gardner Clapp], Greene Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Ni...
Road washed out, Cambria Co., Pa. [Pennsylvania]. (1904)GrayscaleClapp Nitrate Negative, Box 1