Shell Oil Company employees at work, ca.1940

Photograph of Shell Oil Company employees at work, ca.1940. A woman with dark hair, glasses, and dark high heels stands at center in a lightly-colored lab coat turning a dial on the wall to the left. What appear to be silver pipes hang from the wall next to metal yard sticks while dark boxes with dials on their tops sit on short benches below them. A man in glasses and a long lab coat stands on the right, behind the woman, turning dials that hang on the wall of a cabinet to the left of the man. A second man sits in a chair on the far right, next to a similar cabinet, with his back to the foreground as he leans over a notebook on the desk behind him.