Logologists everywhere were long enamored of the word SUBBOOKKEEPER. For, in simple compact form, it was not only unique in having four double letters, but also these pairs appeared one after another in magnificent progression. Unfortunately, Webster's Second, where the word appeared, has been superseded by Webster's Third, where the word is not. And so SUBBOOKKEEPER has been tossed on the junkpile of obsolete words.
Beaman, Ralph G.
"The Lost Word,"
Word Ways: Vol. 4
, Article 17.
Available at: http://digitalcommons.butler.edu/wordways/vol4/iss3/17