Explanations or documentations marked with an asterisk (*) are listed at the end of the related paragraph(s). For brevity, other sources for facts, anecdotes, histories, studies, etc., are cited in the body of the text. Numbered footnotes are at the end of each chapter. Reproductions of selected critical source materials are incorporated into the body of the text or included in the appendices.
The facts cited herein are generally verifiable in the Encyclopaedia Britannica, which was printed primarily on paper produced with cannabis hemp for over 150 years. However, any encyclopedia (no matter how old) or good dictionary will do for general verification purposes.