Public domain photos

The image shows a man in a suit and tie standing in front of a wall with graphs on it. He is pointing to one of the graphs, and there are lights attached to the ceiling above him. The image is in black and white.

The image shows a man in a suit and tie standing in front of a wall with graphs on it. He is pointing to one of the graphs, and there are lights attached to the ceiling above him. The image is in black and white.Open in library