Chapter 19 - Prosperity Plaza

After another failed airship ride, Booker and Elizabeth both end up in Emporia. Take the card from Robert when the chit chat ends then push the piano out of the way. Grab all the loot you find keep heading up to the next firefight. Tear in objects in the area to assist and battle your up to the station.

Just past the Hairpin-locked door leading to Port Prosperity is another door that can be picked open (requires 3 lock picks). Go in there and pick up the Infusion phial from the washtub at the end of the corridor. Back outside, tear in the freight hook so Booker can retrieve the Gear on the scaffold.

Off to the right of the trolley that you must ride to Port Prosperity is a telescope set by the railing. Moving forward past the Ticketing booth after disembarking from the trolley, proceed through the hallway and you'll find a corpse by a wall with a graffiti that says "The Founders will bleed!". On the floor next to that dead body is a Voxophone (this spot is found just before the Salty Oyster Bar).

Pick open the door to the Salty Oyster Bar and stop by the rest rooms in the back to find a kinetoscope. This place holds a secret button behind the register, but you cannot interact with it until you visit the Founders Books shop so you'll have to come back for it later.

Follow the objective arrow to Grand Central Deopt where a major firefight awaits. There will be regular Vox goons, Motorized Patriots and Firemen. Tear in objects especially the Tesla coils and use them to your advantage if you can. With the riot over, enter the news office just past the Grand Central Depot archway to secure a Voxophone among the pile of newspapers.

Proceed to encounter some sniper fire from a foot bridge above. Kill off the marksmen then enter Founders Bookstore which should be nearby (Elizabeth will tell you about it too). Pick the door open. Grab the piece of Gear on the counter and the Voxophone next to the big teddy bear. There is another Voxophone in the basement telling you of the secret button in the Salty Oyster Bar.

Go back to the bar (you will encounter quite a bit of resistance on the way there). Press the button under the register to open the secret room. In it is a wide variety of valuable loot including an Infusion phial and the Return to Sender Vigor on the counter and a Voxophone in the washtub.

Follow the objective arrow to the destination. There is no turning back once you pass through the turnstile so make sure you have everything. Call the elevator then search the counter for the code.