Related Clues:

• Communicate by hand
• Affix an X, maybe
• Make a contract legal
• Make it official
• Part of 5-Down: Abbr.
• From the United States: Abbr.
• Pt. of AAA
• What a catcher puts down
• Pt. of U.S.A.
• From the States: Abbr.
• Res. of the U.S.
• Foreshadowing
• Affix a signature
• ''Stop'' or ''Yield''
• Make one's name