Alphametics (AMs) are crypted arithmetic problems; one or two are included in almost every collection of adult puzzles. They are a regular feature in the Journal of Recreational Mathematics (JRM). Precedent for including AMs as logology is provided by Dmitri Borgmann in "Language on Vacation."
Word Ways: Vol. 27
, Article 3.
Available at: http://digitalcommons.butler.edu/wordways/vol27/iss1/3