I think the closest Tri-Ess to you will be in New Jersey. You should also look into Renaissance, a support group for transgender people of all stripes (crossdressers, transexuals, etc.); they meet the third Saturday of every month in King of Prussia, just outside of Philly. They have a meet-up group (on meetup.com) called "Renaissance Greater Philadelphia Chapter." Feel free to PM me if you have any questions...