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 (dark) of an aerial view of Juneau, Alaska.

Black and white lantern slide of Robert H. Merrill standing on a runway in front of an airplane.

Black and white lantern slide of the doorway of a stone building at Uxmal covered over with a curtain.

Black and white lantern slide of a water hoist wheel.

Black and white lantern slide of the sacred cenote (sinkhole) at Chicen Itza.

Black and white lantern slide of archaeologists Blom and Lehrer cutting through heavy underbrush near Chichen Itza.

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

Black and white lantern slide of the Temple of the Warriors at Chichen Itza taken from the top of the Castillo steps. A boy wearing a hat and backpack stands near the camera on the steps.

Black and white lantern slide of a ruined tower at Chicen Itza with construction scaffolding and a worker on top.

Black and white lantern slide of an indigenous man in a tall hat standing in front of a Model T Ford automobile near Uxmal, Mexico.

Black and white lantern slide of five men at the front of a train engine turning it manually.

Black and white lantern slide of people waiting on a railroad platform to baord a train in Yucatan, Mexico.