Historical clue formulations

• Part of a boot — 2020-09-18
• Tip of a wingtip — 2017-03-03
• Boot feature — 2015-11-07
• Work boot feature — 2003-01-16
• Boot reinforcement — 2002-06-19
• Boot part — 2001-11-04
• Shoe reinforcement — 2000-05-28
• Boot tip — 2000-02-17
• Cobbler's tip — 1996-12-31