Once you used the Key from the Alter and have the 2nd infusion, head back to the Order of the Raven building. Proceed down the hall and find the elevator. Use it. When you come out of the elevator, enter the room to the left to find the Voxophone on a desk to the right.

In the Order of the Raven (building behind the Serpent statue). After using the Elevator and you enter the room with a projector, in the room with the projector look to the right for a movable bookcase. The hidden room has a Gear box.

After you first encounter crows, before leaving the building you will see a broken vending machine. A gear box is at the base of this.

After you first encounter crows, leave the building. To the left is a Police Barge with a Telescope on it.

As soon as you enter the station, turn to your right. It's between two benches.

The first time you use the Sky Rail, make sure to drop off at the Maintainence platform (it's blue, and to the left of the sky rail). In the back room is an upgrade. Don't forgot to use the Telescope on the platform.

The first time you use the Sky Rail, make sure to drop off at the Maintainence platform (it's blue, and to the left of the sky rail). On the platform is a Telescope. Don't forgot to grab the infusion in the back room of the platform.

After using the Sky Rails for a while you will get blocked by some freight on the tracks. To clear it you need to use a lever in a room to the right. There is another smaller room to the right where you can find the Voxophone on a desk.

After the skyrail, you need to use the sky hook to climb into a window on the upper floor. You will enter a bedroom. Look behind the dresser to the right of the bed. The box of gear is hidden there.

Enter the tower and check the staff lockers on the left to find the Voxophone.

After the Siphon machine, go through the set of doors. There is another door to the left. Inside is the Voxophone.

Go past the projector and photographs rooms. While approaching the second part of the Siphone machine, the Voxophone is past the second door way on a desk.

The second Siphon machine you come across, there is a desk infront of you with a Voxophone on it. Behind the desk is an Infusion upgrade.

After Elizabeth opens the tear to France, continue around and find the Voxophone in the next area.

When you arrive at the beach, you'll see a red and white striped wagon. The Voxophone is hidden underneath it.

Head into the building you need to go through. On the other side of the wall (i.e. look back when you exit) is a Kinetoscope.

Leave the shop, go onto the boardwalk. After choosing either the Cage of the Bird, go around the security checkpoint. Go inside the employees entrance. There is a storage room past some doors where you can find the Voxophone. (Past the dollar bill machine.)

Next to Voxophone 18. On the metal table.

After you pass the servants area and enter the arcade, a man from Mr. Fink tells you he has something from Fink. A gear box is on the table for you.

Check out the white people bathrooms in the amusement center. The male toilet contains the Voxophone.