In the August 1988 Word Ways, I wrote about my plans to launch a computer attack on the 10-by-10 double word square. I asked for help from Word Ways readers who might help gather 10-letter words from dictionaries and other sources. I received only one reply, from George H. Ropes, who had just written an article on his own search for a 10-by-10 word square. He had the Air force word list from Webster's Second on diskettes, and graciously supplied those diskettes to me.
"10-By-10 Squares: Progress Report,"
Word Ways: Vol. 22
, Article 10.
Available at: http://digitalcommons.butler.edu/wordways/vol22/iss1/10