Related Clues:

• Invitation abbr.
• Invitation request
• Letters on an invitation
• FYI equivalent
• Request of an invitee, briefly
• Env. notice
• ''Mayberry ___''
• Invite letters
• ''Please reply''
• Mayberry address abbr.
• Accept an invitation
• Env. directive
• Memo heading abbr.
• Memo-heading abbr.
• 'Mayberry ___'