New cantilever crane at a Navy yard on Mare Island, Solano County, California, ca.1900

Photograph of a new cantilever crane at a Navy yard on Mare Island, Solano County, California, ca.1900. At center a metal bridge-like structure is visible jutting over a lake below. A tall crane is visible at the end of the structure, with a pulley system visible on the right end. A man wearing a dark suit and cap is visible standing on the structure to the left. Two rowboats are visible in the water on the right, while the city of Vallejo is visible in the background. The city is composed of multiple-story buildings, most with sloped roofs. Mountains are visible in the far background.