I first became aware of this particular wordplay recreation when I noticed its use in the Nov. 8, 1998 New York Times Crossword puzzle, which was composed by Robert Malinow and entitled "Insiders." Although the concept of insiders may well have been an original one with Malinow, I have since learned that similar devices have, in fact, long been employed in clues used by so-called "cryptic" crosswords.
Word Ways: Vol. 41
, Article 6.
Available at: http://digitalcommons.butler.edu/wordways/vol41/iss3/6