Here you will find key books on Spectro-Chrome therapy
Dinshah Ghadiali – Spectro-Chrome Metry Encyclopedy
Dinshah Darius Ghadiali – Let_there be light (12th edition 2016)
Predecessor of Dinshah. Fundamental points about the method in a simpler form. The work that prompted the study of the direction.
The Principles of Light and Color by Edwin D Babbitt (1878)
These and other books are also available in the telegram group Spectro-Chrome Metry – Books and other information materials.