The True and Invisible Rosicrucian Order
The True and Invisible Rosicrucian Order is Paul Foster Case's thorough and lucid explanation of the Rosicrucian allegories Fama Fraternitatis and the Confessio Fraternitatis. It is available from the B.O.T.A. Online Store and also as an eBook from Amazon, Barnes & Noble, and Apple.
Dr. Case's book expands these classic esoteric texts into an entire system of spiritual unfoldment.