923. Begin the important words in the names of books, of plays, of musical compositions, of paintings and of pieces of sculpture with capital letters.
924. Begin with capital letters personal titles when they are written with personal names.
Colonel Morrison, Professor Hunt, Secretary McAdoo.
925. Begin the names of months, days of the week, and holidays with capital letters.
Figures
926. Write out in full only those numbers that can be expressed in two words.
Ninety-nine, fifty thousand, one million.
927. Write out in full sums of money in even dollars which can be expressed in two words; otherwise use the dollar sign and figures.
928. Use the dollar sign and figures for sums of money in dollars and cents.