The conventional way to alphabetize names that start with these prefixes is to treat Mac and Mc the same. Names that start with Mc are treated as though they were spelled Mac. In effect, “Mc” has an invisible “a” between the “M” and “c”.

Where does MC go when alphabetizing?

These rules are "letter-by-letter" (or "character by character") rules. They also largely ignore distinctions among different punctuation marks and do not distinguish among the types of access points. In these rules, for example, names beginning with M', Mc, and Mac are filed alphabetically as spelled.

What is the proper way to alphabetize filing?

alphabetize names by comparing the first unit letter by letter. If the first letters are the same, file in terms of the second letter, and so on. Names of individuals are filed as follows: last name, first name or initial, middle name or initial.