Document 1.
Draft of letter from Bohr to Heisenberg, never sent.
In the handwriting of Niels Bohr's assistant, Aage Petersen.
Undated, but written after the first publication, in 1957, of the Danish translation of Robert Jungk, Heller als Tausend Sonnen, the first edition of Jungk's book to contain Heisenberg's letter.
Three numbered pages.
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Document 2.
First draft of congratulatory letter for Heisenberg's 60th birthday (5 December 1961), never sent.
In Margrethe Bohr's handwriting.
Undated.
Two pages.
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Document 3.
Second draft of congratulatory letter for Heisenberg's 60th birthday, never sent.
Typewritten.
One page.
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Document 4.
Heisenberg's response to Bohr's greeting, by telegram (in BSC) on his 60th birthday.
Handwritten, on Heisenberg's personal letterhead.
There is also a typed version, created upon receipt.
Two pages (front and back of one sheet).
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Document 5a.
Draft of letter from Bohr to Heisenberg, never sent.
Carbon copy of Document 5b, without handwritten corrections.
One page.
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Document 5b.
Draft of letter from Bohr to Heisenberg, never sent.
Identical to Document 5a except for handwritten additions (<>) and deletions.
The document includes an addition on a separate page in Niels Bohr's assistant, Jørgen Kalckar's, handwriting.
Two pages.
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Document 6.
Draft document in Margrethe Bohr's handwriting.
Undated.
Two pages.
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Document 7.
Incomplete draft of letter(s) from Bohr to Heisenberg, never sent.
In the handwriting of Margrethe Bohr, with corrections by Niels Bohr, added in Aage Bohr's handwriting (<>).
Last page may be continuation of Document 8.
Undated.
Three pages.
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Document 8.
Handwritten notes.
First and last few words, as well as some words overwritten for clarification, in Margrethe Bohr's handwriting (<>); the remainder in Niels Bohr's handwriting.
Undated.
"(1)-(2)" is in Aage Bohr's handwriting; it may mean that the passage at the end of document 9 should be inserted here.
Last page of Document 7 may be the continuation.
One page.
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Document 9.
Notes dictated by Niels Bohr in the handwriting of Aage Bohr.
Undated.
Last sentence clearly intended to be inserted at end of first paragraph on second page ("(1)-(2)").
Three pages.
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Document 10.
Incomplete draft of letter from Bohr to Heisenberg, never sent.
In the handwriting of Margrethe Bohr.
Undated, but written after Bohr had received reprints of his Rutherford Lecture on 15 March 1962.
Five pages.
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Document 11a.
Incomplete draft of letter from Bohr to Heisenberg, never sent.
First of three versions: draft in Aage Bohr's handwriting.
Undated Five numbered pages.
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Document 11b.
Incomplete draft of letter from Bohr to Heisenberg, never sent.
Second of three versions: carbon copy of Document 11c, without the handwritten corrections.
The text is practically identical to Document 11a.
Underlined heading in Aage Bohr's handwriting.
Three numbered pages.
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Document 11c.
Incomplete draft of letter from Bohr to Heisenberg, never sent.
Third of three versions: typed letter, with additions (<>) and deletions in Margrethe Bohr's handwriting.
Underlined heading in Aage Bohr's handwriting.
Three numbered pages.
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