58. Professional correspondence : March 1964 - April 1965
59. Professional correspondence : April 1965 -May 1965
60. Professional correspondence : June 1965 - September 1965
61. Professional correspondence : September 1965 - November 1965
62. Professional correspondence : November 1965 - February 1966
63. Professional correspondence : February 1966 - April 1966
64. Professional correspondence : April 1966 - October 1966
65. Professional correspondence : November 1966 - March 1967
66. Professional correspondence : March 1967 -May 1967
67. Professional correspondence : May 1967 - August 1967
68. Professional correspondence : September 1967 - November 1967