31. The first words, principal words, and last word in English tides of books and other publications; of their divisions (parts, chapters, cantos, etc.); of the topics of speeches, sermons, toasts, and the like; of pictures; of plays; of musical compositions, etc.
In long titles nouns and pronouns are capitalized always; verbs, participles, and adverbs usually; articles, prepositions and conjunctions never.
Standard Thesaurus of English Words and Phrases, Science and Health with Key to the Scriptures, Lincoln’s Gettysburg Address, Paradise Lost, Measure for Measure, A New Way to Pay Old Debts, The Coronation of Charles VII at Rheims, the Moonlight Sonata.
The word “the” is capitalized when it forms an actual part of the title of a book but not otherwise.
The Printer’s Dictionary. The Life and Times of Charles V. the Review of Reviews, the Laacoon, the Fifth Symphony.
32. Dedications; headings of parts and chapters; headings of many important minor parts of a book.
To All Who Love Good Printing.
Chapter Twenty-Seven.
Part Three.
The Invention of Movable Types.
The Practical Value of Gutenberg’s Invention.
(These last as sections of a book on the origin
of printing).
33. In foreign languages the usage is somewhat different. The following rules will be found useful:
a. Always capitalize the first word.
b. In Latin capitalize only proper nouns and adjectives derived therefrom.