Clue: Ar, ef or dee: Abbr.

Answer: LTR

Length: 3

---

Similar Clues:

• Each circled pair is an abbreviation for one; all 13 are arranged in the roughly north-to-south order in which their representatives (except for John Hancock) signed the Declaration of Independence (COLONY with 6 letters)
• Organization of lawyers (Abbr.) (ABA with 3 letters)
• Area measures: Abbr. (ACS with 3 letters)
• "Law & Order" figures: Abbr. (ADAS with 4 letters)
• Truly, madly or deeply: Abbr. (ADV with 3 letters)
• W.W. I army: Abbr. (AEF with 3 letters)
• The Cleveland Browns were among its original teams: Abbr. (AFC with 3 letters)
• From Oran to Durban: Abbr. (AFR with 3 letters)
• Farming area: Abbr. (AGR with 3 letters)
• Artist's rep (abbr.) (AGT with 3 letters)