This thread was a couple of weeks ago, but I wanted to add that there is a CSA that brings its produce to the 5th & South Farm market on Tuesdays (you can pick up from 2-7PM). The farm is in Oley PA.
We were pleased with the produce (extremely fresh) and the variety. They would provide you with an order sheet for the next week where you could pick a certain # of items.
I found out that one of the issues they have since they are a small farm is that in order to offer something the next week, they have to have a large enough crop which may mean that they have things for sale at their table at the farm market which was not offerred to the CSA members.
For those interested, this E-mail address should work to request further info: firstname.lastname@example.org