The leader of Alexandria, Deanna, is an adaptation of Douglas from the comic series. Their genders were switched for the television series.
When the group arrives, they all take a shower (or at least change clothes and appear cleaner) except for Daryl (Norman Reedus)
The book Michonne (Danai Gurira) is holding during her talk with Deanna (Tovah Feldshuh) is "Crime Without Punishment" by Senator John L. McClellan. Its subject is government corruption.