Black and white lantern slide of a man leaning against a wall of stone at the East fork of Greenwood Creek.

Black and white lantern slide of two outbuildings making up part of the Temple of Heaven in Beijing, China's Forbidden City.

Black and white photograph of the Nervi sea coast. Stone archways and paths are visible along the coast.

Black and white photograph of a path along the Nervi coast. A building is visible on the left of the frame, a man is walking towards the camera on the path, and mountains are visible in the distance.

Black and white photograph of Nervi street in Italy. The street is lined with trees and mountains are visible in the distance.

Black and white lantern slide of an excavated burial site with a human skeleton.

Black and white lantern slide of an excavated burial site with two human skeletons. A man can be seen sitting on the edge of the pit.

Black and white photograph of Manchester Mills, a long brick building alongside a river. A bridge is visible in the distance.

Black and white lantern slide of Silver Cascade, a waterfall on the Saco River.

Black and white lantern slide of a bridge over the Pecos River.

Black and white lantern slide of the ruins of Pueblo Bonito in Chaco Canyon.

Black and white photograph of a lock. A building is next to the lock, and a flagpole and flag are visible in the center of the image. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of a man walking across a street lined with lampposts and trees in front of a large building with hipped roofs, columned porch, and nine visible chimneys. Taken my Merrill while attending the American Society of Civil…

Black and white photograph of a hydroelectric power plant. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of a hydroelectric power plant and dam. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of New York City buildings, taken by Robert Merrill from Metropolitan Tower in Manhattan.

Black and white photograph of 16 pickerel fish hanging from a railing.

Black and white photograph of three women and two men, including Robert H. Merrill, standing behind a gravestone that reads "In Memory of Nathaniel Merrill Died 1655." The gravestone in the foreground of the image reads "In Memory of Stephen Swett B.…

Black and white photograph of the Niagara River and Niagara Escarpment at Queenstown (or Queenston), Ontario.

Black and white lantern slide copy of a sketch of Niagara Falls done in 1698 by Father Louis Hennepin.

Black and white photograph of a small cottage in the woods. The door is open and someone is bent over in the doorway. "Nordheim Cottage - Little Manistee Looking N." is written on the bottom of the image.

Black and white photograph of a small cottage, two buildings, and an automobile in the woods. "Nordheim Cottage - Little Manistee Looking W." is written on the bottom of the image.

Black and white photograph of two men and two women sitting on the rock formation Norman's Woe looking out to sea in Glouchester, Massachusetts.

Black and white photograph of the Norris Geyser Basin, Yellowstone National Park. Taken by Robert Merrill, looking north. Several figures can be seen at a long distance. Water damage is visible on the image, which was scanned from the negative.