I keep a link to Charlotte's web page up on the right side of the Daylily Forum home page. You might check there for PA sellers. Nearly everyone I kniw who breeds or sells daylilies or has a website about them is listed there.
http://daylilydiary.com/
I did go to the AHS site, and now feel spoiled to live in Central Ohio. I have a lot of great gardens within a couple hours drive. I had no idea there were so few listed for your region.
