Voxophone #13: Tiger by the Tail - Ty Bradley
Monument Island - locker in the first room of the Monument Island.
Voxophone #14: To: R. Thompson Re: Fuses - Ty Bradley
Monument Island - in the laboratory behind the Passive Siphon.
Voxophone #15: A Reward, Deferred - Zachary Hale Comstock
Monument Island - on a desk inside the room with the Siphon.
Voxophone #16: The Source of Her Power - Rosalind Lutece
Monument Island - inside the Specimen Observation Room #4.
Voxophone #17: Born in the River - Ed Gaines
Battleship Bay - under the trailer in the first part of the beach (where Booker wakes up).
Voxophone #18: Heaven - Daisy Fitzroy
The Arcade - inside a basket in a room reserved for employees only (near a corridor leading to the main area of The Arcade).
Voxophone #19: A Dog's Loyalty - Zachary Hale Comstock
The Arcade - in a toilet reserved for "white" people, to the left of the arcade.
Voxophone #20: Take Her Alive - Esther Mailer
Park Ticketing - to the right of the ticket hall. You can find this secret after you separate with Elizabeth.
Voxophone #21: The Golden Path to Heaven - Zachary Hale Comstock
Park Ticketing - in a room under the stairs, to the left of the gondola the Elizabeth has run off to.