Black and white photograph of a mountain landscape.

Black and white photograph of a mountain landscape behind foliage.

Black and white photograph of a forest landscape with mountains in the background.

Black and white photograph of a forest landscape with mountains in the background.

Black and white photograph of a forest landscape with mountains in the background.

Black and white lantern slide of three people standing next to an automobile on a very rocky road in Yucatan, Mexico.

Black and white lantern slide sketch map of archaeological sites in Yucatan, Mexico.

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

Black and white lantern slide of a map of flying routes over Yucatan, Mexico.