A few years ago, I produced a few thousand nine squares, but they have lain fallow since, as Chris Cole presented "Modern Nine-Squares" in November 2001 and Richard Sabey presented "A Collection of Nine-Squares" in February 1997. I did, however, look for a square with a word on the diagonal as well. Failing to find one among my few thousand or in Word Ways, I now take pleasure in presenting it, plus a small variation.
"Nine Square WIth Palindromic Diagonal,"
Word Ways: Vol. 35
, Article 2.
Available at: http://digitalcommons.butler.edu/wordways/vol35/iss2/2