In the beginning of the episode, you see Sam with the "southern belle," As she treats his wound, in the background is a player piano. However player pianos did not come out until the early 1900s. Further, the piano rolls on top are QSR rolls in the red boxes, which are relatively new.
Al: (about Olivia) She's one hell of a woman.
Sam: Yeah, well hell's one word I would use.
Montgomery: (toasting) To victory!
Al: Up your nose with a rubber hose.
This episode was filmed at Golden Oaks Ranch in Santa Clarita, CA. The ranch and the land has been owned by the Walt Disney Company since 1959. Due to the natural setting and numerous standing sets including a covered bridge, it is consistently used by the film and tv industries.
This is one of only two Quantum Leap episodes where Sam leaps out of his own lifetime, the other being "The Leap Back", where he leaps into 1945, which in within Al's lifetime (the two were simul-leaped at the end of Season 3).
Sam is able to leap in 1862, 91 years before his birth, because of Sam's blood relation to his leapee. He leaps into his great-grandfather, Capt. John Beckett of the Union army.
Michael D. Roberts (Isaac) previously played Willis Trafford in "The Color of Truth".
Olivia is Sam Beckett's great-grandfather's future wife.
Olivia's slave, Isaac, was an ancestor of Martin Luther King Jr and a conductor for the Underground Railroad, a circuit of stops (usually farms or houses) which were used by runaway slaves to escape to the North during the American Civil War..
When lying to Montgomery about his identity, Sam says he was injured in the battle of Bull Run.
Sam is referring to The Second Battle of Bull Run, a major battle of the American Civil War, which was fought August 28 - August 30, 1862, one month prior to his leap-in.
Al: An officer, but definitely not a gentleman.
This is a reference to An Officer and a Gentleman, a 1982 film starring Richard Gere and Debra Winger.
In the course of the episode, Al refers to Olivia as "Scarlett" and Sam as "Rhett".
"Scarlett O'Hara" and "Rhett Butler" are the main characters in the film Gone with the Wind, the motion picture adaptation of the novel by Margaret Mitchell. It concerns the plot of Scarlett, who must fight to keep her land together in a war-torn south during the Civil War. She falls in love with Butler, a northern entrepreneur with a heart of gold.