Why Nine?

Did you know that a global survey revealed that after addressing seven envelopes, letter writers will mess up on the eighth one? I don’t know if that’s a real survey since I just made it up. But I can tell you, as a calligrapher, it is a common occurrence. I include 9 envelopes for every set of 8 note cards for you because I want you to be prepared to send that note without delay!