Post Office parking

I was wondering how to get in touch with the guy who rents out the parking lot near the main entrance to the fest. A couple of years ago I dealt with a guy in a bank building, and the parkiing was something like $35. A buddy of mine found him last year, but he had already sold all the spaces.

I just need a place to park my fish-mobile for the 3 or 4 of us who want to start the day fly fishing in the area.