1. When a person, a place, and a thing have the same name, they are arranged in normal alphabetical order.

hoe, garden
Hoe, Robert
London, England
London, Jack

2. When multiple persons, places, or things are listed, list the persons together.

London (England)
London, Amy
London, Jack

3. Initials used in place of a given name come before a spelled-out name beginning with the same letter.

Oppenheimer, K. T.
Oppenheimer, Katharine S.

4. Acronyms, initialisms, and most abbreviations are alphabetized according to their spelled-out versions.

NOW (National Organization for Women)
NATO (North Atlantic Treaty Organization)
North Pole

5. An at sign (@), which normally can be treated like the letter a, may be ignored as part of a screen name.

6. Isolated entries beginning with numerals are alphabetized as though spelled out.

1984 (Orwell) [alphabetized as nineteen eighty-four]
125th Street [alphabetized as one hundred twenty-fifth street]
10 Downing Street [alphabetized as ten downing street]

7. If many numerals occur in an index, they may be listed together in numerical order at the beginning of the index, before the As.

8. When two or more similar headings with numerals occur together, they are ordered as though they were spelled out.

section 44 [alphabetized as forty-four]
section 9 [alphabetized as nine]
section 77 [alphabetized as seventy-seven]

9. Introductory articles, prepositions, and conjunctions are disregarded in alphabetizing subentries, whether the subentries are run in or indented.

Churchill, Winston: as anti-Fascist, 369; on Curzon line, 348, 379; and de Gaulle, 544n4

10. It’s fine to use numerical order for some subentries, even if other entries in the same index (but not the same entry) are alphabetized.