Historical clue formulations

• Layer between the crust and the core — 2023-03-05
• Layer beneath the earth's crust — 2023-01-29
• Mickey of the Yankees — 2021-01-19
• Layer below the earth's crust — 2020-01-21
• Priciest 1952 Topps baseball card — 2019-05-24
• Layer of the earth — 2018-05-27
• Layer of the earth between the crust and the core — 2013-05-14
• Sleeveless cape — 2005-07-03
• Mickey of Cooperstown — 2002-11-12
• Layer of the earth — 2002-05-10
• His "7" was retired — 2002-03-22
• Slugger Mickey — 2001-10-15
• Symbol of authority — 2000-03-04
• Sleeveless cloak — 2000-02-26
• Three-time A.L. M.V.P. — 1997-10-19
• Symbol of authority — 1997-07-04