The line "This is the new world, and in this world you can be whoever the fuck you want." was first spoken by Maeve in Chestnut (2016)
A badge on Caleb's battle dress uniform in the Park 5 training area indicates that he has the rare AB-negative blood type.
This is the fourth time on the show that Dolores says the line "Some people see the ugliness in this world. I choose to see the beauty"; she previously said it in The Original (2016) (twice) and The Bicameral Mind (2016).
The version of Pink Floyd's "Brain Damage" played over the end credits contains the sound of tubular bells, indicating that it is from the 2003 30th anniversary remaster of the album "The Dark Side of the Moon". According to band member Richard Wright, the sound was lost in previous mixes due to the limitations of the 16-track tapes the were working with at the time.
The note Lawrence gives Bernard "to find her" reads: 27713 RAVENS RD LOS ALTOS HILLS CA 94024