Letter from Rudi Holzapfel, May 18, 1969, with envelope

Letter to Rudi, November 21, 1969; carbon copy

Letter to Rudi, undated – seems to be draft of November 21, 1969 letter; carbon copy

Letter from Rudi Holzapfel, undated, with envelope postmarked April 14, [19--] and folded broadsheet [with preservation photocopy of inscription area]

Copy of form letter sent to editors from Rudi Holzapfel, dated spring 1986, autumn-winter 1986, with envelope and printed list of publications for sale

Letter from Rudi, January 22, 1987, with envelope

Holzapfel interview transcription, with corrections, undated; carbon copy, 7 leaves

Handwritten pad of notes, first leaf begins, “Holzapfel", undated, 13 leaves