Where is the Salty Oyster?

In the bookstore before heading to Comstock there is a recording.

The recording says that some guy's girl has been taken and locked away in some other guy's hidden closet with "treasures" in the Salty Oyster.

Where can I find it?

1 Answer

Never mind I found it:

Before going through the turnstiles that lead to Comstocks home, you just have to backtrack for a bit. You get the "Return to Sender" vigor, an infusion bottle and there's a recording too.