In the November 1989 Word Ways, Peter Newby presented a set of literate cryptarithms. This name was coined by Newby, but is is a well-known concept: these are cryptarithms in which the code letters form interrelated words. They are discussed in "Mathematics on Vacation" (1966) by Joseph Madachy, editor of the Journal of Recreational Mathematics. He calls them alphametics, a word coined by J.A.H. Hunter in 1955.
Gordon, Leonard J.
"Literary Cryptarithmetic By Computer,"
Word Ways: Vol. 23
, Article 2.
Available at: http://digitalcommons.butler.edu/wordways/vol23/iss2/2