The Mahatma Letters to A. P. Sinnett (book)

First published in 1923, this volume gathers most of the letters sent by Mahatmas Morya and Koot Hoomi to A. P. Sinnett and A. O. Hume between the years 1880 and 1884. This publication, where the letters were arranged under subjects, underwent three editions. On March 25, 1972, Vicente Hao Chin, Jr. published a fourth edition with the letters arranged in chronological order based on the Readers Guide to The Mahatma Letters to A. P. Sinnett written by George Linton and Virginia Hanson. This edition also includes brief notes by Hanson regarding the context and circumstances of each letter.