BioShock Infinite Clash in the Clouds DLC revealed - GameSpot

Combat-oriented expansion features four maps of increasing difficulty available this week for $5; narrative-focused Burial at Sea DLC lets gamers play as Elizabeth.
BioShock Infinite is a first person shooter where players assume the role of former Pinkerton agent Booker DeWitt who is sent to the flying city of Columbia on a rescue mission to save Elizabeth, who has been imprisoned since childhood.

bioshock Archives - Gaming Age

BioShock Infinite DLC Returns to Rapture - GameSpot

The Creation of Columbia at PAX East 2011

Bioshock Infinite: Clash In The Clouds DLC – Review (PS3)

BioShock Infinite DLC Returns to Rapture - GameSpot

BioShock Infinite SPOILED GAMES! Adam Sessler with Jeff Gerstmann and Kevin VanOrd

Bioshock: Infinite Archives — GAMINGTREND

BioShock Infinite Cultural References, BioShock Wiki

Here's what you can unlock in the museum in BioShock Infinite's first DLC - Polygon