Related Clues:

• Mos. upon mos.
• Abbr. in old letter sign-offs
• Part of w.p.m.: Abbr.
• Model information: Abbr.
• Sr. and jr.
• Cen fractions.
• Cen. parts
• Abbr. for seasons played
• Time line markings: Abbr.
• Dict. listings
• Mos. add up to them
• Brief letter sign-off
• Cent. parts
• Century divs.
• Decade divs.