The device they use in the hospital to see back in time to 1976 is a Viewmaster Model E with two extra dials added.
When Quentin wakes up in Dublin, the driver's name was Jason Taylor, the combination of Jason Ralph (who plays Quentin), and Olivia Taylor Dudley (who plays Alice).
This episode guest stars Grey Damon, who previously starred alongside Jason Ralph in Aquarius (2015). He is the third Aquarius alumni to guest star after Spencer Garrett and Brían F. O'Byrne.