"The Science History Institute’s Three Alchemical Miniatures correspond to text from Das Buch der heiligen Dreifaltigkeit (The Book of the Holy Trinity). Produced in the 1400s in either Southern Germany or Austria, the Buch is distinguished as being the first alchemical treatise composed in German, rather than the more prevalently used Latin. Though Das Buch’s authorship has not been definitively attributed, scholars speculate that the author was a Franciscan monk who sought financial support from Emperor Sigismund of Luxembourg and his wife Barbara of Cilli before eventually securing royal patronage from margrave Frederic I of Brandenburg."

https://www.sciencehistory.org/collectio...iniatures/

"In this book, Dr. Lisiewski delves into the hitherto unknown role Israel Regardie played in the world of Practical Laboratory Alchemy: not the world of idle speculation and so-called inner alchemy, but the realm of the test tube and the Soxhlet Extractor. Revealed for the first time are Regardie's own private alchemical experiments, his intense interaction with Frater Albertus of the Paracelsus Research Society, and later, with the author himself. All is laid plain, taken from Dr. Lisiewski's extensive personal notes and recollections of his lengthy association with both men."

https://www.academia.edu/123562806/The_A...n_To_Earth

Text and audiobook:

"On Wednesday, May 20th, 1640, the eve of the glorious Ascension of our Savior Jesus Christ, after praying to God and His Most Holy Virgin Mother in the Metropolitan Cathedral of Notre-Dame in Paris, I left this beautiful and grand church and, carefully considering its rich and magnificent portal, with such exquisite structure, from the foundation to the summit of its two tall and marvelous towers, I made the notes that I am about to explain."

https://www.alchemy-texts.com/book/curio...c-figures/

"Sacred Secretion & The Philosopher’s Stone, or alchemy, wasn’t just about turning lead into gold—it was about transmuting the body and mind into a divine state.
The “Philosopher’s Stone” – Symbolizes the refined sacred secretion, leading to immortality and enlightenment. 
The Three Stages of Alchemy:
Nigredo (Blackening) – Detox, purification, death of the ego.
Albedo (Whitening) – Raising the Christos Oil, energy ascension.
Rubedo (Reddening) – Activation of the Third Eye, full illumination.
This mirrors the exact process of the Sacred Secretion! Most people don’t realize that the “Great Work” of Alchemy is the same internal transformation described in esoteric Christianity and Kabbalah."


https://awolfram.com/sacred-secretion-tree-of-life/

"For over 600 years, the Voynich Manuscript has remained one of history’s most significant undeciphered texts. Previous decryption attempts failed because they relied on single-language solutions, overlooking the manuscript’s intricate, multi-layered structure. This paper presents compelling evidence that the Voynich Manuscript is not a random assortment of symbols but an encoded text employing linguistic layering, hydroglyphic modifications, and celestial-based cipher shifts by identifying these encoded mechanisms—specifically, a moon-cycle shifting system that alters the text according to planetary alignments."

https://www.academia.edu/127990250/The_H...dge_System

Short article with some oriental insights:

https://www.chemeurope.com/en/encycloped...+life.html

"This essay considers the implications of a shift in focus from ideas to practices in the history of alchemy. On the one hand, it is argued, this new attention to practice highlights the diversity of ways that early modern Europeans engaged alchemy, ranging from the literary to the entrepreneurial and artisanal, as well as the broad range of social and cultural spaces that alchemists inhabited. At the same time, however, recent work has demonstrated what most alchemists shared-namely, a penchant for reading, writing, making, and doing, all at the same time."

https://colab.ws/articles/10.1086%2F660142

"History: Fiction or Science? is the most explosive tractate on history that was ever written however, every theory it contains, no matter how unorthodox, is backed by solid scientific data. The book contains 446 graphs and illustrations, list of 1534 sources, copies of ancient manuscripts, and countless facts attesting to the falsity of the chronology used nowadays. The dominating historical discourse was essentially crafted in the XVI century from a rather contradictory jumble of sources such as innumerable copies of ancient Latin and Greek manuscripts whose originals had vanished in the Dark Ages and the allegedly irrefutable proof offered by late mediaeval astronomers, resting upon the power of ecclesial authorities."

https://www.amazon.com/gp/product/291362...2913621074

Lecture by David Brafman 

Chemical Rainbows and Liquid Crystal Souls: The Spirit of Alchemy in the History of Art

"In medieval Europe, alchemy was known as the Great Art; in Islam, it was simply "the Art." In this lecture, David Brafman, associate curator of rare books at the Getty Research Institute and curator of the exhibition “The Art of Alchemy,” explores this mysterious and misunderstood subject and its influence on artistic practice and expression from antiquity to the present day."

https://www.youtube.com/live/ZGp-Rc22b6I?t=1991s

Old (1937) article from Nature.

"In a reprint from Osiris (2, 220; 1936), W. J. Wilson, of the Library of Congress, Washington, deals with a treatise copied by Arnaldus de Bruxella at Naples between 1473 and 1490, arid purchased by Lehigh University, Pennsylvania, in 1881 for the price of ten dollars. It is a compendium of chemical and alchemical recipes of a type fairly well known through other manuscripts of similar date in Paris and elsewhere."

Full text:

https://www.nature.com/articles/139022b0