Practical alchemy:-
Albertus, Frater. An alchemist's handbook.
Junius, Manfred. Practical Handbook of Plant alchemy.
Barbault, Armand. Gold of a Thousand Mornings.
Dictionary:-
Haeffner, Mark. The Dictionary of alchemy.
Ruland, Martin. The Lexicon of alchemy.
Psychological/Jungian interpretation:-
Jung, Carl Gustav. Psychology and Alchemy.
Books with images:-
Klossowski de Rola. Stanislas. Alchemy : the secret art.
Klossowski de Rola. The Golden Game.
Fabricius, Johannes. Alchemy. The Medieval Alchemists and their Royal Art.
Roob, Alexander. Alchemy and mysticism. The hermetic museum.
Alchemical Symbols:-
Gettings, Fred. Dictionary of occult, hermetic and alchemical sigils.
Books in other languages:-
Hutin, Serge. l'Alchimie.
Burckhardt, Titus. Alchemie.
Coudert, Allison. Alchemie. De steen der wijzen.
Coudert, Allison. Der Stein der Weisen.
Ganzemüller. Beitrage zur Geschichte der Technologie und der Alchemie.