Work begins on the Cass Avenue addition on Aug. 18, 1959.

Photo from the Burton Historical Collection, Detroit Public Library

The Cass Avenue addition begins to take shape on Jan. 13, 1960.

Photo from the Burton Historical Collection, Detroit Public Library

Work begins on the terrace on Oct. 2, 1963.

Photo from the Burton Historical Collection, Detroit Public Library

Work continues on the terrace on Oct. 24, 1963.

Photo from the Burton Historical Collection, Detroit Public Library

The Cass Avenue addition nears completion on Jan. 15, 1964.

Photo from the Burton Historical Collection, Detroit Public Library

The Cass Avenue addition nears completion on Jan. 15, 1964.

Photo from the Burton Historical Collection, Detroit Public Library