Clue: Abbr. on an envelope

Answer: 6 possible answers to Abbr. on an envelope. From 3 to 4 leters. For instance ATT, ENCL, MRS.

Abbr. on an envelope answers with 3 characters:

• ATT
• ENC
• ESQ
• MRS

Abbr. on an envelope answers with 4 characters:

• ATTN
• ENCL

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• Host of an annual convention attended by publishers: Abbr. (ABA with 3 letters)
• Annapolis: Abbr. (ACAD with 4 letters)
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• Annex: Abbr. (ADDN with 4 letters)
• Info on an envelope: Abbr. (ADDR with 4 letters)
• Envelope line: Abbr. (ADDR with 4 letters)
• Edwards or Andrews: Abbr. (e.g. AFB with 3 letters)
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