Black and white photograph of an automobile parked at the bottom of a gravel pit with two boxes on the ground next to the car.

Black and white photograph of a man leaning against the back tire of an automobile in the middle of a gravel pit. Two boxes stand on the ground near his feet.

Black and white photograph of three archaeological measuring sticks leaning against the outside wall of a garage to the right of an open door.

Black and white photograph of a group of people standing next to railroad tracks that are placed in a ravine.

Black and white photograph of a group of people standing next to a line of automobiles parked along a road. Two men are standing at the top of a bioherm, an ancient moundlike reef mad of marine invertabrates, next to the road.

Black and white photograph of two men, Dr. Frank Leverett and [?] Taylor. A person's shoulder is visible in the bottom left corner of the frame.

Black and white photograph looking down a street lined with tall buildings. Automobiles are parked along the street, and people are visible walking.

Black and white photograph looking down a street lined with tall buildings. Automobiles are parked along the street, and people are visible walking.

Black and white photograph of people working in a ditch in a street lined with houses.

Group of ten men with shovels

Group of ten men with shovels

Black and white photograph of Lamont artifacts including part of a skull.

Black and white photograph of a man, Tony, holding a mammoth tooth in front of a house.

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 photograph of a group of seven men standing in front of trees.

Black and white photograph of a man standing in a ditch filled with water. Two men are squatting at the edge of the ditch and another man is standing next to the ditch in the background.

Black and white close-up photograph of an ancient Native American clay pipe found in Olivet, Michigan.

Black and white photograph of a line of automobiles alongside a road at the bottom of a hill.

Black and white photograph of a group of people standing next to a line of automobiles alongside a dirt road.

Black and white photograph of groups of people standing in front of piles of gravel, the face of a rock ledge, and a wooden house.

Black and white photograph of a woman, Gert, sitting and sketching on a portable easel in front of trees.

Black and white photograph of a valley filled with trees.

Black and white photograph of a field in front of cliff faces. On the left is an archaeological excavation site with two men working.