Possible Clues:

• Early Fords
• 1920s-'30s Ford output
• Some classic Fords
• 1903-04 cars sold only in red
• 1920s Duesenbergs, e.g.
• New cars in 1928
• Assembly line classics
• New cars of 1928
• Cars discontinued after 1931
• 1920's Duesenbergs