The nine chapters of the book deal incisively with the major themes involving these languages: the classification and history of the Indigenous languages of North American, Middle American (Mexico and Central America), and South American; difficulties involving names of the languages; origins of the languages of the New World; unclassified, phantom, fake, and spurious languages in the Americas; recent hypotheses of remote linguistic relationships; the linguistic areas of the Americas; contact languages, including pidgins, lingua francas, and mixed languages; and loanwords and other new words in the native languages of the Americas.