Public domain photos

The image shows an old black and white photo of a large room filled with lots of machines, people, poles, boards with text printed on them, and other objects. At the top of the image, there is a ceiling with lights.

The image shows an old black and white photo of a large room filled with lots of machines, people, poles, boards with text printed on them, and other objects. At the top of the image, there is a ceiling with lights.Open in library