Definition of Cutter number
: a combination of characters representing an author's surname, composed of the initial letter or the first letters followed by numbers (as M62 = Milne, M64 = Milton), chosen to make the numerical order of the symbols correspond to the alphabetical order of the names, and used to arrange books in the same class alphabetically by authors
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Origin and Etymology of cutter number
after Charles A. Cutter †1903 American librarian
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