The curious side of me popped up once again.  Are you currently preparing returns for all 54 states?  If not why would you need to have such a list.  Because of all of the anvils over the years, my memory garage isn't as large as it used to be so I hate to clutter it up with extra stuff I don't need to know.  If Rhode Island was on such a list, I would hate to clutter up the garage with those extra nuts and bolts since I have never prepared a return for that state and I'm guessing I am not going to do so in the near future.  I focus on what I need to know for today and not worry about tomorrow until maybe tomorrow.