We aren't yet set up with excellent online contact forms, etc., but that's coming soon. Meanwhile, here's a handy all-purpose mailing address for all things PCP:
Primary Communications Project
442 E. 1300 North Road
Monticello, IL 61856-9549
U.S.A.
You can also send email to Bill Taylor, the guy who does almost everything, at this address:
btaylor[at]prairienet[dot]org
You of course know what to do with the [at] and the [dot]...