The two short essays below are transposals of each other (that is, each can be formed by rearranging the letters in the other). More precisely, they are antigrams, since one is an essay on anagrams and the other is an essay on the opposite topic, antigrams.
"Anagrams and Antigrams: An Antigram,"
Word Ways: Vol. 33
, Article 19.
Available at: https://digitalcommons.butler.edu/wordways/vol33/iss4/19