Klein's bar is known to serve alcohol by members of the Atlantic City Women's Temperance League and they discuss this activity at a meeting in "Nights in Ballygran". When Alderman George O'Neill is making collections at the beginning of "Family Limitation" Kleins is crossed out on the list of places he needs to visit implying that he has already made the collection.
|Season one appearances|
|Boardwalk Empire||The Ivory Tower||Broadway Limited||Anastasia|
|Nights in Ballygran||Family Limitation||Home||Hold Me in Paradise|
|Belle Femme||The Emerald City||Paris Green||A Return to Normalcy|