Petroleum Museum Coffee Mug View cart ““THE WORKING MAN” PRINT” has been added to your cart. $18.99 Warm up your mornings with this classic coffee mug featuring the Museum’s logo on one side and our trademark pair of pumpjacks on the other. 11 oz. capacity In stock Petroleum Museum Coffee Mug quantity — OR — Add to cart Categories: Drinkware, Museum Souvenirs Related products “THE WORKING MAN” PRINT $45.00 Add to cart Derrick Metal Lamp $225.00 Add to cart WEST TEXAS PUMPING UNIT AND DERRICK BLANKET $19.99 Add to cart Black Metal Pumpjack $79.99 Add to cart