Verses with the word epistle in the Apocrypha (3 verses):

1 Esdras 2:26
I have read the epistle which ye have sent unto me: therefore I commanded to make diligent search, and it hath been found that that city was from the beginning practising against kings;

Additions to Esther 11:1
In the fourth year of the reign of Ptolemeus and Cleopatra, Dositheus, who said he was a priest and Levite, and Ptolemeus his son, brought this epistle of Phurim, which they said was the same, and that Lysimachus the son of Ptolemeus, that was in Jerusalem, had interpreted it.

1 Maccabees 8:22
And this is the copy of the epistle which the senate wrote back again in tables of brass, and sent to Jerusalem, that there they might have by them a memorial of peace and confederacy: