From R B [Kitaj] to Ronald, June 1, 1964 [postmark]

Undated, ALS from R.B. Kitaj to Ronald, 1p

Undated, ALS from R.B. Kitaj to Ron, 1pc [aerogramme]

Undated, ALS from [R.B. Kitaj] to [RJ], 1p [on verso of titlepage torn from Long Marlv.

January 24, 1964 [postmark], ALS from Ronnie [Kitaj] to Ronald, 1pc [aerogramme]

February 15, 1971 [postmark], ALS from RB [Kitaj] to Ronald, 1p + env

January 11, 1973, TLS from RB [Kitaj] to Ronald, 1pc [aerogramme]