Calm weather in the Straits of Mackinac

A calm water day in May of 1955 at the Straits of Mackinac, Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: A calm water day in May of 1955 at the Straits of Mackinac
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1955 (approximate)