The first of 5 appearances by Soon-Tek Oh (1975-1982), sometimes credited as Soon-Teck Oh and Soon-Taik Oh.
Dennis Dugan, who plays Pvt. McShane, also plays Col. Potter's son-in-law, Robert 'Bob' Wilson in Season 11's Strange Bedfellows (1983).
During the birthing scene, Gary Burghoff originally ad-libbed the line, "I saw her fuzzy-wuzzy!" The line was cut from the final version, but Burghoff relays this anecdote in 'M*A*S*H': 30th Anniversary Reunion (2002).
Colonel Blake says that Trapper and Hawkeye are trying to gaslight him. This saying refers to the 1944 movie of the same title in which Charles Boyer tries to convince Ingrid Bergman that she is slowly going insane.
As McShane comes into the Swamp to discuss his crooked marriage plans with Trapper, the phonograph is, appropriately, playing "Temptation."