Historical clue formulations

• 1920s-'30s Ford output — 2014-08-28
• 1903-04 cars sold only in red — 2009-11-18
• New cars of 1928 — 2003-09-28
• Cars discontinued after 1931 — 2003-09-27
• 1920's Duesenbergs — 2001-08-04