Giving letter titles and dates (for educational purposes).
Letters to Gail, Volume One, by Paul Twitchell (Copyright 1973, Fifth Printing - 1983):
1. The Spiritual Life - p. 10 [December 6th, 1962]
2. Yardstick for Judging - p. 13 [December 9th, 1962]
3. The ECK Life - p. 16 [December 16th, 1962]
4. Need of an Ideal - p. 19 [December 24h, 1962]
5. Christianity and Buddhism - p. 22 [December 30h, 1962]
6. Self-Protection - p. 25 [January 5th, 1963]
7. The Reactive Mind - p. 28 [January 10th, 1963]
8. Imagination - p. 31 [January 18th, 1963]
9. Law of Reversed Effort - p. 34 [January 23rd, 1963]
10. Mysticism and Magic - p. 37 [January 31st, 1963]
11. Poetic Language - p. 41 [February 8th, 1963]
12. States of Mysticism - p. 44 [February 14th, 1963]
13. Self-Analysis - p. 47 [February 18th, 1963]
14. Metaphysics of Mysticism in Eastern Philosophy - p. 51 [February 22nd, 1963]
15. Metaphysics of Mysticism in Eastern Philosophy (Continued) p. 54 [February 23rd, 1963]
16. Theory of Games - p. 57 [March 1st, 1963]
17. Theory of Games (Continued) p. 59 [March 7th, 1963]
18. Spiritual Disciplines p. 62 [March 14th, 1963]
19. Problem Solving - p. 66 [March 17th, 1963]
20. Spiritual Power - p. 70 [March 28th, 1963]
21. Sufis - P. 73 [March 28th, 1963]
22. Soul Travel - p. 76 [March 31st, 1963]
23. The Audible Life Stream - p. 79 [April 1st, 1963]
24. Anger of the Lord - p. 83 [April 2nd, 1963]
25. Hero/Anti-Hero - p. 86 [April 4th, 1963]
26. Holy Spirit/Audible Life Stream - p. 89 [April 5th, 1963]
27. Belief in an Ideal - p. 92 [April 6th, 1963]
28. Out-of-Body Consciousness - p. 95 [April 7th, 1963]
29. Religions of China - p. 98 [April 8th, 1963]
30. Structure of Man - p. 101 [April 9th, 1963]
31. Creativity - p. 104 [April 10th, 1963]
32. Zen Buddhism - p. 107 [April 11th, 1963]
33. Zen Buddhism (Continued) - p. 110 [April 12th, 1963]
34. Indian Religions - p. 114 [April 13th, 1963]
35. Nobility - p. 117 [April 14th, 1963]
36. Peace of Mind, Religious Proselytizing - p. 120 [April 15th, 1963]
37. The Chaos of God - p. 124 [April 16th, 1963]
38. The Gaze of God - p. 127 [April 17th, 1963]
39. Coptic Christian Church - p. 131 [April 18th, 1963]
40. The Cabala - p. 134 [April 19th, 1963]
41. Gnosticism - p. 137 [April 20th, 1963]
42. Tibet - p. 140 [April 21st, 1963]
43. Western Mystics - p. 143 [April 22nd, 1963]
44. World of Self Consciousness / The Five Perversions of the Mind (1) Kama-Lust - p. 146 [April 23rd, 1963]
45. Five Perversions of the Mind (2) Krodha-Anger - p. 149 [April 24th, 1963]
46. Five Perversions of the Mind (3) Lobha-Greed, (4) Moha-Attachment, (5) Ahankar-Vanity / Four Primary Perceptions of the Mind - p. 152 [April 26th, 1963]
47. Postulates - p. 155 [April 28th, 1963]
48. Occult Study of Music - p. 158 [April 29th, 1963]
49. Karma - p. 161 [April 30th, 1963]
50. Reincarnation - p. 164 [May 1st, 1963]
51. List of Books - p. 167 [May 4th, 1963]
Letters to Gail, Volume Two, by Paul Twitchell (Copyright 1977, Fourth Printing - 1986):
52. Values - p. 10 [May 5th, 1963]
53. Time - p. 13 [May 6th, 1963]
54. Maya - p. 16 [May 9th, 1963]
55. Depth Psychology - the Conscious and Subconscious Mind - p. 19 [May 10th, 1963]
56. Earth Movers - p. 23 [May 11th, 1963]
57. Space - p. 26 [May 12th, 1963]
58. People Pleasers and Fear Merchants - p. 29 [May 14th, 1963]
59. Beingness - p. 32 [May 15th, 1963]
60. Cults - p. 35 [May 17th, 1963]
61. Magicians - p. 38 [May 18th, 1963]
62. Exoteric and Esoteric Knowledge - p. 41 [May 19th, 1963]
63. Universes and Other Planes - p. 45 [May 20th, 1963]
64. Dharma - p. 48 [May 21st, 1963]
65. Inner Conflicts - p. 51 [May 22nd, 1963]
66. The Tone Scale - p. 54 [May 23rd, 1963]
67. Hypnotism - p. 57 [May 24th, 1963]
68. Other Worlds and Civilizations - p. 60 [May 25th, 1963]
69. Jivatma Psychology - p. 63 [May 26th, 1963]
70. Jivatma Traps - p. 66 [May 27th, 1963]
71. Necessity of a Strong Mind - p. 69 [May 28th, 1963]
72. The Spiritual Heirarchy - p. 72 [May 29th, 1963]
73. The Authority - p. 75 [May 30th, 1963]
74. Ridicule - p. 78 [June 2nd, 1963]
75. Socialism - p. 81 [June 3rd, 1963]
76. Names of God - p. 84 [June 4th, 1963]
77. Intuition - p. 87 [June 6th, 1963]
78. Jivatma's Journey - p. 90 [June 9th, 1963]
79. The Lofty Teachings - p. 94 [June 10th, 1963]
80. Sight Without Eyes - p. 97 [June 12th, 1963]
81. The Angel of Death - p. 100 [June 15th, 1963]
82. Seat of Knowledge - p. 103 [June 16th, 1963]
83. Spiritual Disciplines - p. 106 [June 18th, 1963]
84. Beyond God - p. 110 [June 19th, 1963]
85. The Seven Fold Veil - p. 113 [June 22nd, 1963]
86. Beingness-Giving Space - p. 116 [June 23rd, 1963]
87. Spiritual Problems - p. 119 [June 24th, 1963]
88. Existence of God - p. 122 [June 26th, 1963]
89. Where to Find the Guru - p. 125 [June 28th, 1963]
90. From Whence Came Evil If We Didn't Get It From God, The Good? - p. 128 [June 29th, 1963]
91. How Much Effect Does Karma Work In The Minute Acts Of Man? - p. 131 [June 30th, 1963]
92. Who Is To Tell One What The Will Of God Might Be? - p. 134 [July 1st, 1963]
93. How Can The Mind Conceive The Desire for a Good Thing To Be An Evil In And Of Itself? - p. 137 [July 2nd, 1963]
94. How Does One Die Daily and Yet Live? - p. 140 [July 4th, 1963]
95. How Does Idealism Affect The Drive Of The Spirit? - p. 143 [July 5th, 1963]
96. The Nature of the Spiritual Energies - p. 146 [July 7th, 1963]
97. How Does Priori Knowledge Exist as Spiritual Knowledge? - p. 149 [July 8th, 1963]
98. The Limitations of Knowledge - p. 152 [July 10th, 1963]
99. The Limitations of the Spiritual Force (the positive) in the Lower Worlds - p. 155 [July 12th, 1963]
100. The Razor-Edged Path - p. 158 [July 14th, 1963]
Letters to Gail, Volume Three, by Paul Twitchell (Copyright 1990):
101. Slave or Master? - p. 1 [January 16th, 1964]
102. The Third Eye - p. 5 [January 17th, 1964]
103. The Fluid World - p. 9 [January 18th, 1964]
104. A View on Attitude - p. 13 [January 21st, 1964]
105. Projection - p. 17 [January 25th, 1964]
106. The Inner World - p. 21 [January 27th, 1964]
107. The Finished Kingdom - p. 25 [January 30th, 1964]
108. Imagination and the Astral Body - p. 29 [February 2nd, 1964]
109. Fate in Your Life - p. 33 [February 4th, 1964]
110. To Have or Have Not - p. 37 [February 6th, 1964]
111. The Inner Speech - p. 41 [February 8th, 1964]
112. The Eternal Dreamer - p. 45 [February 10th, 1964]
113. Mockups - p. 49 [February 11th, 1964]
114. How to Prevent Harm to Your Body - p. 52 [February 14th, 1964]
115. Reading the News - p. 55 [February 15th, 1964]
116. Controlling Your Destiny - p. 59 [February 16th, 1964]
117. How Pain and Problems Control You - p. 63 [February 18th, 1964]
118. Space Making - p. 67 [February 20th, 1964]
119. Psychic Space - p. 71 [February 23rd, 1964]
120. Imagination and History - p. 75 [February 29th, 1964]
121. Pseudo Religion - p. 79 [March 1st, 1964]
122. Imagination and the Astral World - p. 75 [March 3rd, 1964]
123. A Dream World Method - p. 87 [March 6th, 1964]
124. The Power Streams of Nature - p. 91 [March 8th, 1964]
125. Imagination and the Gods - p. 95 [March 11th, 1964]
126. Dangers of the Awakened Kundalini - p. 99 [March 15th, 1964]
127. Psychic Self-protection - p. 103 [March 17th, 1964]
128. For Those Who Seek Illumination - p. 107 [March 20th, 1964]
129. Cosmic Consciousness vs Bilocation - p. 111 [March 29th, 1964]
130. Clashes among the Three Types of Metaphysical Systems - p. 115 [March 30th, 1964]
131. How to Escape the Control of the Mind - p. 119 [April 4th, 1964]
132. The Fertile Imagination and the Eternal Dreamer - p. 123 [April 14th, 1964]
133. Mathematics and Word Symbols - p. 127 [April 15th, 1964]
134. The Best Attitudes for Movement out of the Body - p. 131 [April 16th, 1964]
135. What Dual Consciousness Really Is - p. 135 [April 17th, 1964]
136. Simple Secrets of the Dream Level - p. 139 [April 18th, 1964]
137. Proven Methods of Leaving the Body - p. 143 [April 18th, 1964]
138. Problems with Leaving the Body - p. 147 [April 18th, 1964]
139. Projection and Imagination-Hand in Hand? - p. 151 [April 25th, 1964]
140. Colors of the Aura and Their Meaning - p. 155 [May 2nd, 1964]
141. A Yardstick for Psychic vs Spiritual Truth - p. 159 [May 10th, 1964]
142. Are Christianity and Communism So Different? - p. 163 [May 21st, 1964]
143. The Moral Law: Tool of Tyrants - p. 167 [May 31st, 1964]
144. Occult Studies and Bilocation Systems - p. 171 [June 7th, 1964]
145. The Jungle of the Mind - p. 175 [June 15th, 1964]
146. Liberalism, Conservatism, and Reactionaryism - p. 179 [July 19th, 1964]
147. Our Astral Counterpart - p. 183 [August 1st, 1964]
148. Belief and Resistance - p. 187 [August 17th, 1964]
149. The Sharp Sword of Truth - p. 191 [August 27th, 1964]
150. Reincarnation beyond the Earth World - p. 195 [September 1st, 1964]
151. The Three Paths: Mind, Heart, and Body - p. 199 [September 6th, 1964]
152. Psychology as a Pseudoscience - p. 203 [September 13th, 1964]
153. The Cabala - p. 207 [October 13th, 1964]
154. Practical Occultism - p. 211 [October 25th, 1964]
155. The Power of the Word - p. 214 [November 12th, 1964]
156. Four Types of Dreams - p. 218 [November 18th, 1964]
157. Education and Hypnotic Suggestion - p. 222 [November 21st, 1964]
158. The Rational Mind - p. 226 [November 24th, 1964]
159. The Illumined Mind - p. 230 [December 20th, 1964]
160. The Case for Divine Wisdom - p. 234 [December 29th, 1964]
161. The Universal "I" - p. 238 [January 1st, 1965]
162. Nonpower - p. 242 [January 5th, 1965]
163. Raising the Consciousness - p. 246 [January 13th, 1965]
164. Living the Life of ECK - p. 250 [January 23rd, 1965]
165. Freeing Yourself - p. 254 [February 10th, 1965]
166. Beyond Power - p. 258 [February 23rd, 1965]
167. The Law of Grace - p. 262 [March 9th, 1965]
168. What Is God? - p. 266 [March 16th, 1965]
Also, here are a couple letters not on the list.
1964 - LTG3 - June 29th, 1964: (Missing) Talks about men and women, movies they saw: Oklahoma and South Pacific, the president and the war, Paul being free and living the way he wished, won't be influenced by parents, family, marriage or people
http://pub32.bravenet.com/photocenter/album.php?usernum=2719877602#bn-photocenter-1-1-2719877602/20022/1/64334/
1964 - LTG3 - July 7th, 1964: (Missing) Talks about Catholic Church
http://pub32.bravenet.com/photocenter/album.php?usernum=2719877602#bn-photocenter-1-1-2719877602/20022/1/64338/
So this trivia is just in preparation for forthcoming quotes about what Paul had to say with regard to pseudo history, pseudo religion and the imagination, etc.