A. Trevor Barker

• Mahatma Öğretisi
• The Letters of H.P. Blavatsky to A.P. Sinnett
• Mahatma Letters
• Mahatma Letters to A.P. Sinnett
• The hill of discernment
• The Mahatma Letters to A. P. Sinnett (Facsimile of 1926)