Dr. Sigismund Bacstrom (circa 1750-1805), born in Scandinavia, was a physician, alchemist, and Rosicrucian. In 1794 he was initiated into the Societas Rosae Crucis by Comte Louis de Chazal, an occultist and alchemist. Bacstrom met Chazal on the island of Mauritius during Bacstrom's travels as a ship's surgeon. This meeting led to Bacstrom's interest in alchemy. Eventually he settled in London where he practiced alchemy and other ancient arts. He avidly translated many alchemical works into English at the end of the 18th and the beginning of the 19th century. This collection is a small but important part of Dr. Bacstrom's alchemical library. Hand-copied from the original Bacstrom notebooks, the translated text contains commentary by Bacstrom and clarifications from Hans W. Nintzel and other sources. Most notable about the information herein is the cross-referencing that Dr. Bacstrom performs among various Alchemical authors and their works. These can easily lead one toward further sources for research.