Authored by Craig Conley and published in 2005 by HarperCollins, this 232-page book claims that one thousand one-letter words exist. Since there are only 26 letters, this is mathematically impossible; Conley instead presents one thousand different meanings of one-letter words, often with literary citations.
Eckler, A. Ross
"One-letter Words: A Dictionary,"
Word Ways: Vol. 45
, Article 15.
Available at: http://digitalcommons.butler.edu/wordways/vol45/iss3/15