Making the Alphabet Dance describes on p 214 lettering the 20 vertices of a dodecahedron with 20 different letters so that the five letters surrounding each of the 12 faces can be anagrammed into a word.
"Tiling By Computer,"
Word Ways: Vol. 30
, Article 4.
Available at: http://digitalcommons.butler.edu/wordways/vol30/iss2/4