I am looking for a discontinued Pottery Barn bookshelf and end table,
though I am more interested in finding the bookshelf than I am in
finding the end table.  The name of the furniture line was Rockridge
(NOT Rockbridge) when Pottery Barn carried it.  The Rockridge line had
a bookshelf, coffee table, end table and console table.  I am NOT
looking for the console table or coffee table (I already have those). 
I am looking for the bookshelf and end tables.  They have dark wooden
shelves and black wrought iron frames. About a year ago, I found the
console table on Overstock.com, but they no longer carry it.  I have
found a bunch of links that direct me to places in CA, but they have
nothing to do with
what I'm looking for.

I *may* have the bookshelf you are looking for. Unfortunately, I don't
have a picture of it, nor recall the name of the line in PB. It is
from Pottery Barn, the shelves are wood and the supports are wrought
iron. When assembled (and there is minimal assembly), the unit is open
on all sides. The front of the iron supports has a little teardrop
curve, the only real decorative flourish. Probably 5' and 4' wide, 4
shelves in total. Sorry the measurements aren't exact, I'm not at home
at present.

FYI, Rockridge is a neighborhood in Oakland, California which is why
that search result popped up.

I have the end table (and the coffee table and console as well, but
you said you don't need these.)