Gerhard Adler’s letter to Neumann is missing.
On 11 February 1944 Jung slipped and broke his ankle.
Twelve days later, probably due to the immobilization following the injury, he developed a pulmonary embolism and suffered a heart attack.
During three weeks of a semiconscious state Jung had a series of visions that he describes in Memories, Dreams, Reflections (Jung, 1961, pp. 293–301). After a year of convalescence Jung suffered a second heart attack in 4 November 1946. ~Jung-Neumann Letters, Page 199, fn 370