[22] Dufour, Philippe Sylvestre. Traités Nouveaux et Curieux du Café, du Thé, et du Chocolat. Lyons, 1684. (Title page has Traitez; elsewhere, Traités.)
[23] Robinson, Edward Forbes. The Early History of Coffee Houses in England. London, 1893.
[24] Encyclopedia Britannica. 1910. (vol. xv: p. 291.)
[25] Galland, Antoine. Lettre sur l'Origine et le Progres du Café. Paris, 1699.
[26] The Abd-al-Kâdir manuscript is described and illustrated in chapter XXXII.
[27] Rauwolf, Leonhard. Aigentliche beschreibung der Raisis so er vor diser zeit gegen auffgang inn die morgenlaender volbracht. Lauwingen, 1582–83.
[28] Della Valle, Pierre (Pietro). De Constantinople à Bombay, Lettres. 1615. (vol. i: p. 90.)
[29] "She mingled with the wine the wondrous juice of a plant which banishes sadness and wrath from the heart and brings with it forgetfulness of every woe."
[30] Scheuzer, J.J. Physique Sacrée, ou Histoire Naturelle de la Bible. Amsterdam, 1732, 1737.
[31] Jardin, Édelestan. Le Caféier et le Café. Paris, 1895.