I honestly can't remember the exact flow of the game. If you were already at the location that I mentioned above, and you have the monograph I mentioned above then you can still go there and get some $$$ from skeletons.

I'm going from memory here, but if you go in and down the stairs, I think its through the next room. If you look at your map its the biggest, squarest room. It almost looks like a maze?

Anyway, walk around the bottom level of that room and lots of skeletons pop up (these guys are much easier than the ones I mentioned earlier). Kill them, run out and run back. Don't kill your chain. With the monograph, you should be able to get a few $$$, i remember getting a nice piece of armor there occasionally too. There is more running involved, and less $$, but its earlier in the game also.

If you need more info like names and the such, I can do it later. I'm at work.