Historical clue formulations

• Certain fraternity guy, informally — 2025-07-18
• ___ Ep (college frat) — 2018-03-20
• Italian term of address: Abbr. — 2016-07-16
• Certain frat boy — 2013-03-03
• Certain fraternity man, informally — 2011-08-10
• Mr., in Milano — 2011-05-08
• Foreign Mr. — 2010-03-13
• M., in Milan — 2010-01-22
• M. equivalent — 2006-10-14
• M. : France :: ___ : Italy — 2006-01-04
• S, to a frat guy — 2005-05-09
• Milano Mr. — 2004-03-05
• Messina Mr. — 2003-12-04
• Check-cashing requirement: Abbr. — 2000-05-19
• John Hancock: Abbr. — 1997-10-19
• Actor Ruman of "Ninotchka" — 1996-09-28