A stumper, huh?
Or, which organizations can you think of that have been around for 100 years? A few companies come to mind, but very few.
How about the Boy Scouts of America? Yup, 100 years old!
BTW, I posted this link, as opposed to the BSA link because the author has tightly focused on the few things that Boy Scouting all is about. True 100 years later!