Open Source Book Link:

The Lost Keys of Freemasonry, or the Secret of Hiram Abiff

by Manly P. Hall

(According to Wikipedia)
Manly Palmer Hall (March 18, 1901 - August 29, 1990) was a Canadian-born author and mystic. He is perhaps most famous for his work The Secret Teachings of All Ages: An Encyclopedic Outline of Masonic, Hermetic, Qabbalistic and Rosicrucian Symbolical Philosophy, published in 1928[1] [2] when he was 27 years old.

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Manly P. Hall hand wrote these volumes. You will likely need to download them (and be proficient in French) to be able to read them, but many symbols will be readily recognized:

Manly Palmer Hall collection of alchemical manuscripts, 1500-1825 (Volume Box 1)

Manly Palmer Hall collection of alchemical manuscripts, 1500-1825 (Volume box 3)

Manly Palmer Hall collection of alchemical manuscripts, 1500-1825 (Volume Box 5)

Manly Palmer Hall collection of alchemical manuscripts, 1500-1825 (Volume box 6)

Manly Palmer Hall collection of alchemical manuscripts, 1500-1825 (Volume box 7)

(Rosicrutian Character Code Keys)

Manly Palmer Hall collection of alchemical manuscripts, 1500-1825 (Volume Box 10)

Manly Palmer Hall collection of alchemical manuscripts, 1500-1825 (Volume Box 11)

These are open source books that you can download or read online. Just click on a page to turn it backward or forward. Volume collections up to but not all inclusive of Volume Box 40 are available as well:  Click Here

Enjoy!

SL