Source unknown; Retouching by Helmut Ziewers

Students work on engines in a Cass Tech shop class.

Photo from the Walter P. Reuther Library.

Cass students in one of the school's gyms.

Photo from the Walter P. Reuther Library.

Students work in the Cass Tech foundry about 1940.

Photo from the Walter P. Reuther Library.

The Cass Tech auditorium in 1930.

Photo from the Walter P. Reuther Library.

Cass Tech's band practices on the auditorium stage.

Photo from the Walter P. Reuther Library.

Cass Tech, on the left, was connected via a bridge to the High School of Commerce, right, which had served as the previous home of Cass Tech.

Photo from the Walter P. Reuther Library, Wayne State University; Retouching by Helmut Ziewers

The bridge can be seen at far left.

Photo from the Detroit Free Press archives.

The High School of Commerce - a former home of Cass Tech High - is demolished in August 1964 to make way for Interstate 75. Cass Tech stands behind it.

Photo from the Detroit News archives; Retouching by Helmut Ziewers