We're delighted that Lacey Echols called our One-Letter Words: A Dictionary "fool-proof," a "saving grace," "extremely educational, entertaining, and useful."  Here's a snippet from the article "My Visit to Grant's Tome" (Word Ways), in which our dictionary is put to the test:

I wanted to find all one-letter, two-letter, three-letter, etc. words in any given word.  There was one problem.  Even though I have a fairly large vocabulary, I do not know many words which are one-letter words.  Ask me to identify three- and four-letter words, and I am at ease.  One letter?  The only common single letter words are 'a' and 'I'!  However, I was fortunate to hear about a book which could be my saving grace, One-Letter Words: A Dictionary, by Craig Conley.  I felt my confidence begin to soar because with the help of this dictionary I should easily be able to count all one-letter words in any given word, or could I?  Being a bit of a skeptic, I tested my skill with the word 'ait.'  'I' and 'a' are legitimate, but what about 't'?  Sure enough, Mr. Conley provides 58 instances in which 't' is used as a word.  As an example, 'it suits you to a T' uses 't' as a word.  Hallelujah!  But 'ait' is a fairly simple word.  What about 'Mozambique'?  I feel a time-consuming project ahead.  Actually, the dictionary is fool-proof.  There are thirty-five examples using the word 'z' and even twenty-seven examples of the word 'q'. ... I found [Conley's dictionary and Jeff Grant's Concise Dictionary of 2 Letter Words] to be extremely educational, entertaining, and useful for a novice word counter.  Maybe if I never let anyone use these books, I will be able to win all games which include identifying actual words in any given word.