POSSUM is the acronym of Penguins on Stamps Study Unit Member. One of the main goals of our study unit is to have fun with our hobby, so using this acronym is one of the fun things we do.
The first gathering of individuals interested in forming a study unit of penguins on Stamps was in Arlington, Texas in June of 2007. As of 2018 there are now over 100 members and we would love to grow our membership. Visit our Membership page to find out how you can join this fun loving group.