In his article "Most Quality Word Squares" in the February 1988 issue of Word Ways, Dmitri Borgmann exhibited the four finest eight-by-eight word squares known to him. The first example is clearly the best of those shown, as the other all resort to two-word terms which rather detract from their standing.
"Two Hundred Eight-Squares,"
Word Ways: Vol. 21
, Article 6.
Available at: http://digitalcommons.butler.edu/wordways/vol21/iss2/6