Black and white photograph of a wooden gate behind a field and trees.

Black and white photograph of buildings and automobiles at the bottom of a mountain.

Black and white photograph of boulders and stones in a dirt valley with a mountain in the background.

Black and white photograph of part of the dam wall with a metal box and piping in the middle. The two sides are jagged and uneven since the rest o the dam collapsed around this section.

Black and white photograph of a collapsed section of the dam. Parts of the dam wall are still standing, but a large part of the dam wall is destroyed.

Black and white photograph of a section of the dam wall still standing with other destroyed sections collapsed in front of it.

Black and white photograph of a man standing in front of three vehicles on a dirt road.

Black and white lantern slide of folded strata of a rock wall near the St. Lawrence river.

Black and white lantern slide of a folded strata cliff face next to a roadway near the St. Lawrence River.

Black and white lantern slide of an inclined bedrock near the St. Lawrence River.

Black and white photograph of a large building situated on a shoreline. Taken by Robert Merrill in St. Lawrence Park, New York, looking northwest across the water. Water damage is visible on the image, which was scanned from the negative.

Black and white lantern slide of rock formations on the banks of the St. Lawrence river.

Black and white photograph of a fenced in hillside with a lake and town in the background. A house is visible on the left side of the frame.

Black and white photograph of Robert H. Merrill sitting in the ruins of baths in the extinct city of Stabiae.

Black and white lantern slide of a sketch of a Paleolithic reindeer antler baton carved with stag heads from Laugerie-Haute.

Black and white lantern slide of a stone carving on the stairway of the Temple of Heaven in Beijing, China's Forbidden City. The carving depicts a sinous dragon flying above waves.

Black and white lantern slide of the Temple of Heaven in Beijing, China's Forbidden City. The image is taken from the bottom of the stairway.

Black and white photograph showing a wide shot of the Steel Arch Bridge at Niagara Falls.

Black and white photograph of the memorial stone and plaque to the settlers of Hampton and Rev. Stephen Bachiler. The plaque reads, "A little band of pioneers under the leadership of Rev. Stephen Bachiler of Southampton, England seeking a larger…

Black and white lantern slide of a man standing at the base of the marble altar at the Temple of Heaven in Beijing, China's Forbidden City.

Black and white photograph of a building at the foot of a cliff face. Rock and silt can be seen falling from the cliff face.

Black and white photograph stone table legs carved with lion motifs in Pompeii, Italy.

Black and white photograph of striped rocks along the Saguenay River in Québec.

Black and white photograph of the Sugar Loaf rock on Mackinac Island, Michigan, as seen from Point Lookout.