A number of them are B&Ss.

Brittney shared the same phone number as Marsha: http://www.eros-chicago.com/files/ch-cf1-marsha1.htm
  Marsha’s TER reviews: http://theeroticreview.com/reviews/show.asp?id=17593

Here is a message by TheLostSchlong in Dec 2002 in DC board about this Brittney of Chicago.  (Although the link was deleted by TheLostSchlong, the [] note above the list of links is about this ad of Brittney of Chicago) :
http://theeroticreview.com/msgBoard/ViewMsgBody.asp?BoardID=6&Messageid=1836

Other ladies of this agency:
Holly (B&S and borderline ROB):  http://www.eros-chicago.com/files/ch-cf1--holly1.htm
   TER reviews: http://theeroticreview.com/reviews/show.asp?id=15217

Courtney (mixed reviews, not sure whether she is B&S as she show a full face photo in the ad compared to when Keanu reviewed her): http://www.eros-chicago.com/files/ch-cf1-courtney1.htm
   TER reviews: http://theeroticreview.com/reviews/show.asp?id=15108

Cindy (very old photos): http://www.eros-chicago.com/files/ch-cf1-cindy35.htm
   TER reviews: http://theeroticreview.com/reviews/show.asp?id=22367
    Same phone number as Micole

Lolita (mixed reviews, possibly B&S): http://www.eros-chicago.com/files/ch-cf1-lolita2.htm
   TER reviews: http://theeroticreview.com/reviews/show.asp?id=16684
    (Her phone number in that as is the same as Holly’s in her TER profile)

Joy (same phone number of Courtney): http://www.eros-chicago.com/files/ch-cf1-joy1.htm

Jenny (B&S ROB) : http://www.eros-chicago.com/files/ch-cf1-jenny1.htm
   TER reviews: http://theeroticreview.com/reviews/show.asp?id=16481

Skylar: http://www.eros-chicago.com/files/ch-cf1-skylar1.htm
   Same phone number as this ROB Lenzie: http://theeroticreview.com/reviews/show.asp?id=13195

Micole (ROB): http://www.eros-chicago.com/files/ch-cf1-michole1.htm
   TER reviews: http://theeroticreview.com/reviews/show.asp?id=15917
   Same phone number as Cindy

Michelle (ROB): http://www.eros-chicago.com/files/ch-cf1-michelle1.htm
   TER reviews: http://theeroticreview.com/reviews/show.asp?id=9198
   Same phone number as Lenzie (ROB): http://theeroticreview.com/reviews/show.asp?id=13195

Saw a post on one of the others boards with a warning to avoid her.