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Tertiary limestone hills south of Arecibo, seen from road between Arecibo and Ponce; sugar cane in foreground and central (chimney) at left middle ground. Arecibo or Ponce County, Puerto Rico. February 1922.
Panorama with image 539. View of large sink hole on rougher trail from Quebradillas to dam site. Aguadilla County, Puerto Rico. January 1922.
Slickened vertical joints crossing bedding of crushed Chambersburg limestone. Pennsylvania. No Date.
Slickened vertical joints crossing bedding of crushed Chambersburg limestone. Road cut at Riverton, opposite Harrisburg (A 1). New Cumberland quadrangle. Pennsylvania. No date.
Large pond in old iron pit. Pine Grove. Newville quadrangle. Pennsylvania. No date.
Dissected upland northeast of Balltown and north of Tionesta Creek. Forest County, Pennsylvania. May 9, 1921.
Categories: Image;
Tags: Alden, W.C. Collection,
Forest County, Pennsylvania,
Photographers,
photo print
View north toward Clermont. Elk County, Pennsylvania. May 9, 1921.
Categories: Image;
Tags: Alden, W.C. Collection,
Elk County, Pennsylvania,
Photographers,
photo print
Slag dump of steel plant southeast of Steelton (B 8). New Cumberland quadrangle. Pennsylvania. No date.
Magnesite deposit in Pennsylvania about two miles north-northwest of Rising Sun. Old working reopened by Max Junghandel (at cobbing table). Shows old trench on left and in right center on veins crossing at right angles. Pennsylvania. September 19, 1921.
Panorama with image 575. View of the valley of Culebrinas River and the country to the south, seen from the escarpment and road between Lares and San Sebastian. Aguadilla County, Puerto Rico. February 1922.
Bayaney Central (sugar factory) and associated buildings seen from the Arecibo-Lares road. Sugar cane in foreground and cane fields in distance; open country with gentle slopes similar to that at reservoir site and developed in same belt of soft, clayey limestone. Aguadilla County, Puerto Rico. February 1922.
Source area and scar of debris flow near Johnstown, Pennsylvania. Photo by J.S. Pomeroy. Cambria County, Pennsylvania. No date. Published in U.S. Geological Survey Circular 880. Figure 3. 1982.
View along railway north or south of Keating Summit. Porter County, Pennsylvania. May 14, 1921.
Dissected and wooded plateau in northwestern part of county. Elk County, Pennsylvania. May 6, 1921.
Categories: Image;
Tags: Alden, W.C. Collection,
Elk County, Pennsylvania,
Photographers,
photo print
Panorama with image 854. Gap of Susquehanna River in North Mountains, north of Harrisburg. Blue Mountain in foreground, Second Mountain in middle ground, Peters Mountain in distance. Harrisburg quadrangle. Pennsylvania. No date.
Tionesta Creek valley looking south from upland northeast of Balltown. Elk County, Pennsylvania. May 9, 1921.
Categories: Image;
Tags: Alden, W.C. Collection,
Elk County, Pennsylvania,
Photographers,
photo print
Siliceous network residual of siliceous banded limestone of Stonehenge member of Beekmantown limestone, two miles southeast of Mechanicsburg (A 12). New Cumberland quadrangle. Pennsylvania. No date.
View along railway north or south of Keating Summit. Porter County, Pennsylvania. May 14, 1921.
Trap boulders, French Creek Falls. Chester County, Pennsylvania. No date. (Geological Society of America image number 987.)
Categories: Image;
Tags: Chester County, Pennsylvania,
Hardin, E.B. Collection,
Photographers,
photo print
Detail of ledge shown in center of image 883. Magnesite stock work. Portrait of W. Frank Gorrechi. Lancaster, Pennsylvania. September 19, 1921.
Ground crack caused by earthquake of June 27, 1925. Farm of John Dnezer on Deep creek east of Townsend, Montana. Broadwater County, Montana. July 20, 1925.
Categories: Image;
Tags: Earthquakes,
Montana Earthquake 1925,
Pardee, J.T. Collection,
Photographers,
Townsend, Montana,
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