In a book published a few years ago, we presented the first genuine word square ever constructed in English - a square consisting of words instead of letters, with all words in the square using the same number of letters (five). That unique square is reproduced here.
Borgmann, Dmitri A.
"Real Word Squares,"
Word Ways: Vol. 1
, Article 12.
Available at: http://digitalcommons.butler.edu/wordways/vol1/iss4/12