Kate,
My talk is Columbus Day weekend in the Portland area. Region One of the American Iris Society is sponsoring the event but I will forward you all the information about the meeting when I receive them. There is a luncheon along with my program and these are generally fun affairs as it's a room full of insane gardeners!
If this doesn't work for you I'll try to bounce up and visit your nursery. I was born and raised in MA and many friends and relatives are still there. I miss them but I prefer Oregon's climate. Much more benign!
Kevin