v. 1. Early work (1905-1911) / edited by J. Rud Nielsen -- v. 2. Work on atomic physics (1912-1917) / edited by Ulrich Hoye -- v. 3. The correspondence principle (1918-1923) / edited by J. Rud Nielsen -- v. 4. The periodic system (1920-1923) / edited by J. Rud Nielsen -- v. 5. The emergence of quantum mechanics (mainly 1924-1926) / edited by Klaus Stolzenburg -- v. 6. Foundations of quantum physics I (1926-1932) / edited by Jørgen Kalckar -- v. 7. Foundations of quantum physics II (1933-1958) / edited by Jørgen Kalckar -- v. 8. The penetration of charged particles through matter (1912-1954) / edited by Jens Thorsen -- v. 9. Nuclear physics (1929-1952) / edited by Rudolf Peierls -- v. 10. Complementarity beyond physics (1928-1962) / edited by David Favrholdt -- v. 11. The political arena (1934-1961) / edited by Finn Aaserud -- v. 12. Popularization and people (1911-1962) / edited by Finn Aaserud.