Related Clues:

• L.A.'s ___ Museum
• Classic gas brand
• Old gas brand
• Exxon predecessor
• Big oil company
• Big name in petroleum
• Shell alternative
• Exxon, once
• Chevron competitor
• 'The sign of extra service' sloganeer
• Infamous Rudolf
• Dame Myra
• Canadian oil company
• Old U.S. gas brand
• Acronym formed from 'Standard Oil'