Black and white photograph of a ladder with two adjustable legs over a measuring grid square on grass. Part of a camera ladder rig system developed by Merrill for taking overhead photographs of archaeological excavations. Flowers and trees are…

Black and white photograph of a ladder with two adjustable legs over a measuring grid square on sand. Part of a camera ladder rig system developed by Merrill for taking overhead photographs of archaeological excavations. A cottage is visible behind…

Black and white photograph of a ladder with two adjustable legs over a measuring grid square on sand. Part of a camera ladder rig system developed by Merrill for taking overhead photographs of archaeological excavations. A cottage is visible behind…

Black and white photograph of a ladder in front of a tree next to a cottage. Part of a camera ladder rig system developed by Merrill for taking overhead photographs of archaeological excavations.

Black and white photograph of two metric measuring grid squares next to a measuring stick on a rug. Part of a camera ladder rig system developed by Merrill for taking overhead photographs of archaeological excavations.

Black and white photograph of four men working on the mammoth skeleton excavation site at Jonio Farm. At the left, a man leans over a mammoth pelvis bone in plaster.

Black and white photograph of two men standing over mastodon bones in an excavation site at Jonio Farm. Another man is visible working in the background.

Black and white photograph of the statistic sheets from the mastodon excavation project at Jonio Farm.

Black and white photograph of a map of the Excavation at Jonio Farm.

Black and white photograph of an excavation site at the Jonio Farm. Numbered markers are scattered among the excavated areas. A dog is visible sitting and a man can be seen working on the right side of the image.

Black and white photograph of the front of a two-story house with a large front porch. There are no porch awnings, and the photo was taken at an angle from a distance.

Black and white photograph of the side of a two-story house with a large front porch. There are no porch awnings.