Does anyone know where I can buy spruce gum?!

I used to buy it in a little store years ago - I can't seem to find anywhere online... Does anyone remember it (and/or) know where i can get it? And, if it is no longer available, i wonder why! I loved it! It was made from the resin of spruce trees! I am sort of "addicted" to chewing gum and want to get away from it and thought that would be a great alternative (no sugars)... thanks.