This collection of promotional props from Bioshock: Infinite offer some clues to the game's mysterious story.
Murder of Crows tonic
Seemingly similar to the plasmids found in the original BioShock game, the liquid contained in this vessel was shown to give the user the ability to summon an angry murder of crows during a brief in-game demo.
This weathered paper tag hints at the eugenics thread running through the game. This official-looking form includes entries for racial origin, cranial circumference, and general mental ability. Note the 1907 date stamp as well.