Black and white photograph of a man standing behind a partially constructed sewer trench.

Black and white photograph of a sunset at Macatawa. The pier is visible in the distance.

Black and white photograph, multiple exposures of the sun at different positions of a sunset at a beach. Two piers are visible in the distance.

Back and white photograph of two men standing in front of the Mackinaw City ferry moored to a pier. "Michigan State Ferry Mackinaw City" is visible on the side of the boat.

Black and white photograph of the harbor on Mackinac Island, Michigan, taken by Robert Merrill from a higher elevation.

Black and white photograph of Mackinac Island and surrounding water.

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

Black and white photograph of dirt tire tracks in front of a field with trees and a large dirt mound in the background.

Black and white photograph of main camp at Gravel Lake [likely Lac des Gravier]. Taken by Robert Merrill, looking northeast. Four people (one man and three women) can be seen standing in front of a log cabin.

Black and white photograph of Main Street, Medina, New York.

Black and white photograph of a group of people either standing or sitting in automobiles in front of a large monument. "Maine Monument. Havana." is written on the bottom of the image.

Black and white lantern slide of Blue Hill, Maine, looking north.

Black and white lantern slide of an excavated pit with measuring sticks near Blue Hille, Maine.

Black and white lantern slide of a Paleolithic drawing of a male bison from Altamira.

Black and white close-up photograph of the inner side of a mammoth tooth.

Black and white close-up photograph of the outer side of a mammoth tooth.

Black and white lantern slide of several people walking past a megalithic monument, likely at the Bougon Site in Carnac, France. The slide is labeled "Manegroach."

Black and white photograph of a river valley behind trees. "Manistee River Valley - Below High Bridge" is written on the bottom of the image.

Black and white photograph of the Mt. Manitou Scenic Railway in Colorado. A woman, possibly Lena Merrill, is visible at a distance. A sign to the right reads The Scenic Incline to Mt. Manitou Park.

Black and white photograph of the Manitowaning shoreline, Ontario.

Black and white lantern slide copy of a map of the Bay of Naples by Baedeker.

Black and white lantern slide copy of a sketch map of northern China showing the meanderings of the Great Wall, from an unidentified publication.

Black and white lantern slide copy of a map of the Plan of Hai-Ho from Tientsin City to Sea from the Hai Ho Conservancy Commission. Much of the small text of the map is illegible due to the low quality of the image.

Black and white lantern slide copy of a sketch map of Hai-Ho, labeled "Partie Dasse Du Hia-Ho," from an unidentified publication.