Black and white photo of a construction site with buildings

Black helmet with a gold eagle emblem on it

Black and white photo of a bridge spanning a body of water

Two men standing next to each other in a room

Large boat floating on top of a body of water

Old book with a drawing of a triangle on it

Old book with a drawing of a machine on it

Two men standing next to each other on top of a wooden platform

Terracotta statuette of a woman seated on a rock