In describing Father Mulcahy, Charles says "Our spiritual guide through this Oriental purgatory is a cock-eyed optimist who sounds like Dennis Day," a reference to the Dennis Day featured on The Jack Benny Program (1950).
B.J. is seen reading a copy of Yank magazine. The last issue of Yank was published in December 1945.
Though another letter to home show, the title makes allusion to the Nixon tapes whose existence came out during the Watergate scandal.
This episode is the only one where Winchester mentions his nephew Felix. He never revealed if that was his sister Honoria's son; he has never mentioned other siblings.
Father says to Charles and Margaret, "pax vobiscum", which is Latin for "peace be with you."