Deanne Loper's book: https://www.amazon.com/Deanne-Loper/e/B07RXQZGND%3Fref=dbsamngrwtscns_share

Manly P Hall's book: https://www.amazon.com/Secret-Teachings-All-Ages-ebook/dp/B00TFK4HDW/ref=sr11?crid=H6SOSMRZ4ZTU&dchild=1&keywords=the+secret+teachings+of+all+ages&qid=1605407855&s=digital-text&sprefix=The+Secret+Teach%2Cdigital-text%2C200&sr=1-1

Song by Danielson: https://youtu.be/GRGNh5EgZC0