“Cyphers,” Alexander's Weekly Messenger, April 8, 1840, p. 2, col. 2
We have on hand one or two letters from enigmatical friend to which we cannot attend, this week, owing to a press of business. In our next they shall hear from us in full. Incog. is over-hasty, and must read what we said again. We meant no offence in t world, and thought we were sufficiently careful in so wording our article as not to give any.