Chemistry: A Historical Perspective
Includes essays on ancient discoveries, alchemy, organic chemistry, the periodic table, and nuclear reactions.
Carmen Giunta's Classic Chemistry Page
Includes the texts of several classic papers from the history of chemistry and "This Week in the History of Chemistry."
SCETI Online Collection: Edgar Fahs Smith Collection
Devoted to the history of chemistry, emphasizing periods prior to 1850. Includes prints, engravings, and photographs of scientists, their laboratories, and the apparatus they used.