Black and white photograph of the Grand Canyon. The Colorado River is visible in top half of the image.

Black and white photograph of a field with a large dirt mound in the background.

Black and white lantern slide of a Chinese temple in Chining (Jining), China.

Black and white photograph of a northwest view of the ruins of the Temple of Ceres in Italy.

Black and white photograph of the side of the Tenayuca pyramid. Next to the stone wall of the pyramid are smaller stone walls forming a courtyard area around the pyramid, and a statue in a sunken courtyard area.

Black and white photograph of a man standing in a doorway in the Tenayuca pyramid. Several children sit on the steps in front of the door, and another child stands on the other side of a sculpture next to the door on the right side of the frame.…

Black and white lantern slide of a tram stop near the Temple of the Sun, Chichen Itza.

Black and white photograph taken from terrace in Crane Creek valley looking north. The photograph shows a landscape of a golf course with trees and buildings visible.

Black and white photograph of terraces from Point Lookout, Yellowstone National Park. A large group of people can be seen standing along one area.

Black and white photograph of terraces at Yellowstone National Park. Taken by Robert Merrill, looking south from hill.

Black and white photograph of terraces at Yellowstone National Park. Taken by Robert Merrill, looking southeast from hill.

Black and white photograph of a group on horses in front of trees. From left to right: Lena Merrill, Ida Hewitt, Kenneth Hewitt, and Robert Merrill. An unidentified man is standing to the right.

Black and white photograph of Thessalon shoreline, Ontario, as viewed from boat.

Black and white photograph of the gravestone of Thomas Lynd and Elizabeth Lynd (range 2 row 6) which reads, " Here Lyes y Body of Ensign Thomas Lynd Aged 78 Years Died y 15 of October 1693 Also the Body of Elizabeth His Wife Aged 81 Years Died y 2 of…

Black and white photograph of the gravestone of Thomas Prentis which reads, "Here Lyes Y. Body of Thomas Prentis Aged 33 Years 3 M. & 12 Days Who Departed this Life December Y. 7th 1709."

Black and white photograph of the gravestone of Thomas Waite (range 3 row 1) which reads, "Here lyes Buried y Body of Mr. Thomas Wayte Who Departed this Life December 23rd Anno Dom' 1742 in y 82nd Year of His Age."

Black and white lantern slide of two chinese farmers walking down a dirt path through the fields toward railroad tracks. The laborer on the left carries produce in two large baskets hanging from a pole balanced on his shoulder. The laborer on the…

Black and white lantern slide of five people standing in a line across a river bank passing baskets along a rope. A small structure of mud and reeds is visible in the background.

Black and white photograph of the West Thumb Paint Pots by Yellowstone Lake, Yellowstone National Park. Two women can be seen standing in the distance.

Black and white photograph of a small wave in water.

Black and white photograph of a lake taken from a boardwalk. Barrels are visible along the edge of the boardwalk on the right side of the image with a building behind them. Houses and trees are visible on a hillside across the lake are visible in the…

Black and white photograph of a lake with houses and cabins visible on the opposite shore.

Black and white photograph of a lake with houses and cabins visible on the opposite shore.

Black and white photograph of a beach with houses and trees visible in the distance.