This APCO ad appeared in the Arkansas City Daily Traveler in September of 1960:

ARKANSAS CITY AND APCO JOIN HANDS IN SERVING THE MIDWEST

More than 7.5 million barrels of crude oil poured into the APCO refinery during the last 12 months. Arkansas City workmen turned this into finished APCO Products. And Arkansas City workmen helped to move these high quality APCO products to millions of motorists.

Together, Arkansas City and APCO serve the great Midwestern States, from Texas to the Canadian border. Together they have brought recognition of Arkansas City as an industrial center, and to APCO as an important refiner of quality petroleum products.

APCO and Arkansas City work together for mutual benefit.

APCO is grateful that the people of Arkansas City take pride in the products produced here, and show this pride by  patronizing APCO Dealers throughout the Arkansas City area.

Furthermore, APCO is happy to play such a vital part in the growing economy of the area. Last year, more than 200 employees of the company shared in salaries amounting to $1.2 million.

Arkansas City and APCO . . joined together . . form a team that makes for FUTURE GROWTH!