| Answer | Crossword Clue |
|---|---|
| ATTN | Bus.-letter letters |
| ENC | Bus.-letter extra |
| ENC | Bus. letter abbr. |
| ENCL | Bus. letter abbr. |
| ENC | Bus. letter attachment |
| ATTN | Bus. letter abbr. |
| ENC | Bus.-letter abbr. |
| ATTN | Bus. letter directive |
| ENC | Bus. letter extra |
| ENCS | Bus. letter add-ins |
| ATTN | Name preceder on a bus. letter |
| ULT | Last month, in a bus. letter |
