Black and white lantern slide of soil layers with measuring device.

Black and white lantern slide of an excavated burial site. The lantern is labeled "Deep skeleton, uppermost section."

Black and white lantern slide close-up view of a human skeleton excavated from a burial site.

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 lantern slide of an excavated burial site with exposed human skeleton under an elderberry tree.

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 a human skeleton. Three archaeologists stand at the edge of the pit, looking down at the remains.

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 a human skeleton.

Black and white lantern slide of an excavation cut with two partially excavated clay lamps.

Black and white lantern slide of a "deep fireplace" at the Uyak Bay site.

Black and white lantern slide of an excavated gravesite. The label on the slide reads, "Interm. Skeleton under slabs."

Black and white lantern slide of a slab of rocks near a beach. The label on the slide reads "The 'slab walk,' lower section."

Black and white lantern slide of an excavation cut at the Uyak Bay site.

Black and white lantern slide of six men standing around an excavated human skeleton. One man leans on a shovel, another leans on a pickaxe.

Black and white lantern slide of an excavation site at Uyak Bay, Alaska. A sign at the site reads "Government Excavations U.S. National Museum, Visitors Welcome, Admission 20 Shovelfulls."

Black and white lantern slide of archaeologists standing in several levels of excavation at the Bultel-Tellier pit, St. Acheul, Amiens. A horsecart sits near the lowest pit.

Black and white lantern slide of an archaeologist standing next to a section cut at Abri des Merveilles, Sergiac.

Black and white lantern slide of archaeologists working at an excavation site with two Mousterian levels at Abre des Merveilles, Sergiac.

Black and white lantern slide of archaeologists washing specimens at work tables at Abri des Merveilles, Sergiac.

Black and white photograph of a man sitting next to a hole in the ground writing on a piece of paper. A mastodon rib is visible in the hole surrounded by measuring sticks.

Black and white photograph of a mastodon rib bone in dirt next to a ruler.

Black and white photograph of a field in front of a dirt area next to a forest.

Black and white photograph of a field in front of a dirt area next to a forest.