In the November 1992 Kickshaws, Dave Morice quotes Mike Reiss "I'll wager that there is a word, common phrase, or well-known title that will cryptically clue every letter of the alphabet". Indeed there is; cryptic crossword constructors have been weaving their magic for over half a century. I add the following to the original list (also included).
Maclaren, Vernon D.
Word Ways: Vol. 26
, Article 18.
Available at: http://digitalcommons.butler.edu/wordways/vol26/iss1/18