Historical clue formulations

• Architect ___ Ming Pei — 2021-10-14
• The "I" of I. M. Pei — 2020-01-10
• Architect ___ Ming Pei — 2011-02-25
• The "I" in I. M. Pei — 2005-10-28
• The "I" of I. M. Pei — 2005-03-20
• The "I" of I. M. Pei — 2003-11-30