Not sure if this is the appropriate place for this post but...I am an avid native american artifact collector, been collecting for 45 years...a couple of weeks ago I was cutting through the woods heading to a freshly plowed field when I stumbled upon an old dump. Curiosity got the better of me and I started digging, I came across several old ACL Soda Bottles (Nehi, Royal Crown, Golden Age, Hires, Castle Club, Pepsi-Cola, 7-up, and Get Up) After doing some research on the internet I noticed there was an organization called the PSBCA, is this group active and if so do they have local chapters? (I sent them an email but never heard back) I also noticed the was a book written by Rick Sweeney "Collecting Applied Color Label Soda Bottles." Is this book still available? Any help would be appreciated. Thank you.