Texting in 1774?

As I was teaching about Samuel Adams and the Committees of Correspondence, I compared the committees to realllly old school texting, noting that without copy machines or the internet or cell phones, the C. of C. was a relatively quick and clever way to keep the rebels "in the loop." After class, J. slips me a note:

(In case I haven't mentioned it in the past five seconds and it slipped your mind, teaching > pretty much anything.)