Life and Teaching of the Masters of the Far East span six volumes and were copyrighted in 1924 and 1937, being published by DeVorss publications in 1964. They describe the travels to India and Tibet and surrounding nations of a research party of eleven scientists in 1894. During their trip they claim to have made contact with “the Great Masters of the Himalayas”, immortal beings with whom they lived and studied, gaining a fascinating insight into their lives and spiritual message. (source)

Baird T. Spalding (download eBook, pdf)

• Life and Teaching of the Masters of the Far East (Volume I)
• Life and Teaching of the Masters of the Far East (Volume II)
• Life and Teaching of the Masters of the Far East (Volume III)
• Life and Teaching of the Masters of the Far East (Volume IV)

Source:  http://www.horuscentre.org/