Christmas trip

I know I haven't posted in a long time. I haven't even really been knitting that much, especially not socks. But, since I'm a part of this group, and I joined it to be a part of the online knitting community I have to ask: does anyone know of any yarn shops in the Lancaster, PA area? I'll be spending two weeks there from December 14 to January 2 while my boyfriend works with lasers and computers at his second job. I know that I'll need to spend some time with my yarn. I've got my list of what yarns to bring (now I've got to plan my clothes).
I'm also doing an internet search, but I thought some first-hand knowledge would do me well.
Thanks in advance,
Lynn