Containers being filled with "Oil of Lemon", ca.1925

Photograph of an Exchange Products Company employee filling containers with Oil of Lemon, ca.1925. The employee wears a long, lightly-colored lab coat and hat as he manipulates the apparatus at center. The apparatus appears to fill the tin containers with oil of lemon from the large, cylindrical tank on the left. Identical tins are stacked against the tank on the left as well as the wall on the right. A shiny, metal barrel stands on the far right. "Exchange Products Co., Corona Calif. All 'Exchange Brand' Oil of Lemon is carefully weighed on calibrated scales into containers holding 5, 7, 25, 100, or 385 lbs. Avoir Dupois. All containers are carefully sealed to ensure keeping quality of tuf(?) oil".