Public domain photos

The image shows a group of men in blue uniforms working on a machine, surrounded by books and other objects on the floor. In the background, there are pipes, lights, and a wall. One of the men is holding an object in his hand.

The image shows a group of men in blue uniforms working on a machine, surrounded by books and other objects on the floor. In the background, there are pipes, lights, and a wall. One of the men is holding an object in his hand.Open in library