MADAM

Sat, 7 May '22

___ C. J. Walker, first American woman to become a self-made millionaire, per Guinness

Fri, 25 Mar '22

Palindromic title

Sun, 30 Jan '22

___ President

Wed, 7 Jul '21

Palindromic term of address

Sat, 1 May '21

Part of a diplomatic address, maybe