Please add all documents you refer to!

You can edit these remarks or discuss them in the discussion section!

Feel free to add new topics of interest!

Schrödinger and De Broglie

Variational Principles in Schrödinger's Work

This list of questions may be edited. If you feel that a question has been answered, please move the question to the "Answered Questions" section below and sketch the answer!

One session with Frau Annemarie Schrödinger, Erwin Schrödinger's widow, 19 pp. transcript.

BOHR: [Jun 21], 28 Jun 21, (BSC 7,1).
BORN: 2 Nov 26, 6 May 27, 8 Jun 27, (41,7).
DARWIN: 4 Oct 27, 22 Oct 27, (36,1).
DENNISON: 18 Jun 26 (59,1).
GOOD, I.J.: 11 May 1960 (66,5).
JOOS: 17 Nov 26 (41,8).
JORDAN: 28 Jul 27, 18 Nov 29, (18,7).
KRAMERS: 28 Jun 21 (8,10); 19 Nov 26 (41,8).
LANDÉ: 28 Oct 25, 17 Nov 25, 28 Jan 26, (4,20) ; 28 Jun 53 (37,9).
LONDON: 8 Jun 26, 7 Dec 26, (41,9).
LORENTZ: 23 Jun 27 (41,9).
MANNEBACK: 25 Jan 36 (37,9).
VON NEUMANN: 25 Dec 29 (46,2).
PAULI: 15 Dec 26 (41,10).
PLANCK: 26 Feb 26 (41,10).
RUBINOWICZ: 3. Oct 46 (17,B).
SOMMERFELD: 3 letters 1937-49 : 9 October 37, 9 February 38, 13 February 49 (37,12); 11 letters 1938-49 : 26 July 38, 19 December 39, 26 December, 15 January 40, 24 May 42, 7 October 42, 28 January 43, 15 July 46, 19 December 46, 16 August 47, 13 February 49 (34,2).
WENTZEL: 11 May 26 (66,5).
WEYL: 28 Jan 43 (37,14).
WHITTAKER: 29 Mar 44 including 2 pp. statement on determinism and free will, (37,14).
W. WILSON: 16 Apr 52 (66,5).

See:
BLACKETT: 19 February 47 (37,2)
BOHR: 2 February 26, 26 October 35 (41,7, 92,2), 26 October 35, 11 September 26 (Schrödinger NL Alpbach, 6.5, Korrespondenz, Vorordner)
BORN 6 November 26, 16 May 27, 8 January 34, 19 January 34, 30 October 35, 7 November 35, 28 July 35, 20 December 37, 12 December 42, 24 July 47, 27 April 39 and 23 June 38 (Born and Planck, Marga), 28 March 49, 16 April 53, 28 June 35, 7 November 35, 30 October 35, 14 April 26, 28 March 49, 16 April 53, 25 June 35, 19 January 34, 15 February 33, 23 September 50, 11 September 50, 17 February 51, 8 April 51, 20 March 51, 23 November 51, 23 January 52, 3 March 52, 11 March 52, 19 March 52, 27 March 52, 4 April 52, 10 April 52, 7 May 52, 25 June 52, 26 May 53, 3 June 53, 11 January 54, 11 January 54, 4 April 54, 25 March 56, 4 June 56, 14 July 56, 15 June 57, 8 January 34 (41, 92, Schrödinger NL Alpbach, 6.5, Korrespondenz, Vorordner, 37)
BREIT: 17 February 27 (41,7)
BRILLOUIN, L.: 2 October 33, 10 November 36, 28 April 35, 3 November 57, 31 April 56, 1 July 56, 22 August 56 (92,1 and 4, 37,4)
DE BROGLIE: 10 November 33 (43,4)
BUCHWALD
DEBYE
DENNISON: 13 July 26 (41,7)
DIRAC: 14 November 33, 3 August 42, 9 January 52 (43,4, 92,5, 37,4)
EDDINGTON: 17 July 37, 8 October 37, 2 November 37 (37,5)
EINSTEIN: 17 June 35, 19 June 35, 8 August 35, 4 September 35, 17 June 35, 19 June 35, 8 August 35, 4 September 35, 23 March 36, 31 January 63 (92,2, Schrödinger NL Alpbach, 6.2, Korrespondenz, EPR-Korrespondenz, Schrödinger NL Alpbach, 6.5, Korrespondenz, Vorordner, 37,5)
EWALD: 1 September 27 (41,7)
FOKKER: 16 November 52, 4 April 55 (37,6)
GORDON: 28 September 26, 9 October 33, undated (41,7, 92,1)
GROTRIAN
HEISENBERG: 30 October 52 (37,7)
HEITLER: 20 September 27 (41,8)
HERZFELD: [probably 29.08.1927] (41,8)
HUND: 13 November 33 (43,4)
HYLLERAAS: 17 November 33 (43,4)
JOOS: 15 November 26 (41,8)
JORDAN: undated, probably 1926, undated, probably 1927 (41,8)
KELLNER: 27 May 27 (41,8)
KLEIN: 17 July 54, 13 October 54 (37,8, 92,6)
KRAMERS: 15 January 26, 16 November 26 (41,8)
KUDAR: 18 September 26, 8 November 26, 20 November 26 (41,8)
VON LAUE: 17 June 35, 4 March 36, 11 March 36, 1 April 36, 23 April 36, 29 January 37, 26 April 37, 7 May 37, 25 December 50, 20 February 53 (37,8, 92,1)
LONDON: 19 August 26, 1 December 26, undated letter, 13 September 27, 15 September 27, 14 April 28, 30 June 28, 30 June 28 (41,9)
LORENTZ: 8 July 27, 19 June 27, 21 January 27 (41,9)
MADELUNG: 9 October 26 (41,10)
MANNEBACK: 8 September 26, 13 November 33 (41,10, 43,4)
MEITNER: 22 April 52 (37,9)
MEYER: 11 November 33, 29 December 32 (43,4, 37,9)
VON NEUMANN: 20 June 36, 20 June 36, 11 April 36 (92,1, 46,2, Schrödinger NL Alpbach, 6.2, Korrespondenz, EPR-Korrespondenz)
PAULI: 24 May 26, 22 November 26, 12 December 26, 18 December 26, 9 December 35, 9 July 35, 11 March 31, 4 October 39, 21 November 46, 9 February 47, 26 June 52, 27 January 55 (41,10, 92,2, Schrödinger NL Alpbach, 6.2, Korrespondenz, EPR-Korrespondenz, 37,10)
PAULING: 18 December 26 (41,10)
PLANCK: 10 November 33, 19 November 33, 20 July 43, 6 May 46, 3 September 26 (43,4, 92,1 and 5)
RAUSCH VON TRAUBENBERG: 25 May 32 (37,11)
RICHARDSON: 10 November 33, December 33 (43,4, 92,1)
SENFTLEBEN: 17 July 26, 26 July 26 (Postcard), 26 July 26 (Letter) (41,11)
SOMMERFELD: Postcard, undated, 13 December 37, 4 January 33, 18 February 38, 30 November 50, 2 December 50, 13 March 51, 2 April 43, 31 May 46, 12 November 24 (43,4, 92,3, 37,12, 34,2)
THIRRING: 12 November 26, 10 November 33, 20 February 36, 30 October 36, 26 July 37, 3 August 37, 16 April 49, 12 May 49, 28 August 52, 5 May 53, 21 December 53, 16 October 54 (41,11, 43,4, 92,3, 37,13)
TOLMAN: 27 November 35, 22 January 38 (92,1, 37,13)
VAN DER WAERDEN: 26 November 32, 9 January 32, 14 June 32, 26 November 32 (37,14)
WALLER
VON WEIZSÄCKER: 30 May 32 (37,14)
W. WILSON: 21 April 52 (37,14)

Notebook from gymnasium, "Griechische Praeparationen," 29 pp., [before 1906] (39,1).
Exposition, "Über die Peanosche Punktmenge P.," removed from notebook entitled „Escherich, Funktionentheorie, 1907/08 Winter Sem. 2. Heft,“ 20 pp. (39, 1).
Notes, "Vortrag Ramsay, Frühjahr 1908, Über seine neue Theorie der chemischen Verbindung und der Electricität," 15 pp. (39, 1).
University notebook, „Przibram, Konstitution der Materie, Winter 1908,“ I und II. Hefte, 90 pp. (39, 1).
University notebook, "Phys. Seminar, Sommer, 1909," 15 pp. (39, 1).
University notebook, "Philosophie, 1910," 14 pp. (39, 1).
Two university notebooks, „Hasenöhrl Seminar 1910/11“: I, II, insg. 37 pp. (39, 2).
Book of physicists' addresses, 34 pp., [c. 1914] (39, 2).
Diary and notebook, "Tagebuch 1915," 41 pp. (39,2).
Notebook, "Kausalität," 3 pp., 10 Sep 18 (39,7).
Three notebooks, „Tensoranalytische Mechanik,“: I, II, III, insg. 118 pp., [c. 1918] (39,3).
Two unfinished manuscript drafts, „Hertz'sche Mechanik und Einstein'sche Gravitationstheorie,“: I, II, insg. 31 pp., [c. 1918] (39,3).
Notebook, "Schwankungs Opaleszenz," 19 pp., [c. 1918], (39,4).
Notes, "Brown'sche Schwankungen des Drehwinkels," 15 pp., [c. 1918] (39,4).
Two notebooks, „Besprechung der letzten Arbeiten Smoluchowskis,“: I, II, insg. 51 pp., [c. 1918] (39,5).
Notes and three notebooks, „Privatum 1919,“: I, II, III, insg. 103 pp. (39,6).
Notes on Kirchhoff's principle, 20 pp., (c. 1919] (39,6).
Eight notebooks, „Indische Philosophie und Religion,“: I, II, III, IV, V, (VI-VIII - ?), insg. 153 pp., [c. 1904, 1918-19, 19291 (39,7).
Notebook "Über Atomistik, mechanische Naturerklärung, und Phänomenologie," 47 pp., [before 1920] (39,8).
Notebook, "Ad R. Avenarius," 16 pp., [before 1920] (39,8).
Scrapbook of clippings of newspaper articles written by Schrödinger, c. 75 pp., 1923-57 (43,6).
Outline for a book on "Molekularstatistik," 17 pp., [c. 1924]; Offprint "Molekularstatistik" (40,1).
Research notebook, "Chemische Konstante und Gasentartung, II," 34 pp., [c. 1924] (40,1).
Notes for lectures on quantum statistics, 46 pp., [c. 1924] (40,2).
Unfinished manuscript draft, "On QuantumStatistics," 5 pp., [c. 1924] (40,3).
Notes on various topics in quantum statistics, perhaps lecture notes, 100 pp., [c. 1924] (40,3).
Notes for lectures, "Theorie der Spektren," 94 pp., 1925-26 (40,4).
Rough notes, "H Atom, Eigenschwingungen," 3 pp., [late 1925 or Jan 26] (40,5).
Research notebook, "Eigenwertproblem des Atoms. I," 72 pp., [late 1925 or Jan 26] (40,5).
Research notebook, "Eigenwertproblem des Atoms. II. (Ailgemeine Theorie)," 48 pp., [c. Feb 1926] (40,6).
Research notebook, "Starkeffekt fortgesetzt," 16 pp., [c. Feb 26] (40,6).
Research notebook, ". . . Eigenwertproblem des Atoms. III,“ 48 pp., [c. Mar 26] (40,7).
Notes and numerical tables, "Berechnung der Hermiteschen Orthogonalfunktionen," 2 pp., (1926] (40,7).
Loose notes on intensities, 9 pp., [1926] (40,7).
Rough notes, tables and diagrams, "Intensitätsberechnung für den Starkeffekt," 111 pp., [1926] (40,8).
Various rough notes on wave mechanics, 15 pp., [c. 1926] (40,9).
Various unidentified notes from folder, "Korrespondenz zur Undulationsmechanik," 5 pp., [c. l926] (41,6.1).
Research notebook, "Dirac," 24 pp., (1926] (41, 1.1).
Research notebook, "Undulatorische Statistik. I.," 26 pp., [1926] (41,1.2).
Notes, "Zur Transformationstheorie," 21 pp., [1926-281 (46,1).
Research notebook, "Symmetriefragen," 45 pp., 3 May 27 (41,3).
Research notebook, "Undulatorische Statistik. II.," 44 pp., [1927] (41,1.3).
Research notebook on Gordon and Dirac equation, 13 pp., [1927] (41,1.4).
Research notebook, "Intensitäten; Parallele zu Heysenberg [sic] und Lanczos," 37 pp., [1927] (41,2.1).
Research notebook, "Die schwebenden Fragen," 41 pp., [1927] (41,2.2).
Research notebook, "Zu Unscharfe Spektren," 26 pp., [1927] (|41,2.3).
Research notebook, "Streckenspektrum, Intensitaten," 15 pp., [1927] (41,2.4).
Research notebook, "Studien über Integralgleichungen und Kerne. Intensitäten im Starkeffekt, starke Felder," 50 pp., [1927] (41.2.5).
Research notebook, "Koppelung," 24 pp., [1927] (41,4.1).
Research notebook, "Koppelung II," 40 pp., [19271 (41,4.2).
Research notebook, "Koppelung mit dem Strahlungsfeld. Die simultanen Gleichungen Darwin's und Pauli's," 29 pp., [1927] (41,4.3).
Notes, rough and disorganized, for Schrödinger's first lectures in Berlin on quantum mechanics: Plan zur 4-stündigen Vorlesung, Einführung in die Quantentheorie, Winter 1927/28, Atommodell & periodisches System, Atomtheorie Rutherford-Bohr, Notes, De Broglie, Nach Weihnachten 1927/28, Loose Notes 130 pp., 1927-28 (43,7).
Collection of reviews of Schrödinger's Abhandlungen über Wellenmechanik, 25 pp., 1927-28 (43,5).
Miscellaneous notes from folder, „Sommersemester 1928,“: I, II, III, insg. 20 pp., (46,1).
Research notebook, 1) Dispersion und Resonanz, 2) Berlin, juni, 1928, 11 pp. (41,4.4).
Research notebook, "Berlin 1928," 43 pp., (41, 4.5).
Research notebook, "Funkenwahrscheinlichkeit," 12 pp., Jun 28 (41,4.6).
Research notebook, "Darstellungen," 9 pp., [19281 (41,5).
Research notebook, "Zur Abel'schen Integralgleichung," 10 pp., [1928] (41,5).
Notebook, "Parameter," 12 pp., [before 1929] (42,1).
Notebook, "Schwankungen," 8 pp., [before 1929] (42,1).
Notes, "Radioaktivität," and "Koppelung durch Randbedingungen." 13 pp., 1929 (42,1).
Notebook, "Warum," 20 pp., [1929] (43,3).
Notes on von Neumann's representation of the probability interpretation, 14 pp., [1929-30] (46,2).
Notes and drafts on various quantum mechanical topics, 21 items: Various notes on Quantum Mechanics, Über die Individualität quantenmechanischer Systeme, Notes, Bohr-Einstein, Zu den zwei getrennten Systemen, Bemerkungen, Notes, Die Unbestimmtheitsrelation, Collapse of Determinism, Strahlungsgleichgewicht in geschichtetem Mittel, Zwillingsbildung, Notes, Transformation positiver Funktionen, Transformation der E.W. in Dirac's Theorie, Die Bedeutung der Uhr, Natürliche Entstehung des Gitters, Notes, Notes, Bemerkungen (Veranlasst durch Van den Driesche, Methodos (1949) p. 307), The Simpson Line from the Projective Point of View, Gedanken über die Bedeutung der absoluten Lösungen, Notes, Copy of Referee's Report on paper A.54, insg. 93 pp., [after 1929] (43,1-2).
Notebook, „Neue Grundauffassung,“: I, II, III, IV, insg. 66 pp., June 30 (46,4).
Notes, "Überquantelung," 56 pp., Jul 30 (42,2).
Various notes on Lorentz invariance and the Dirac electron: I, II, insg. 28 pp., [c. 1930] (46,3).
Manuscript draft, "Gerade und ungerade Operatoren der relativistischen Quantenmechanik," unpublished, 25 pp., 1930-31 (46,3).
Notes on quantum mechanics, "Seminar 1930/31," including a letter from Fritz Sauter of 25 Nov 30 on Dirac's electron theory, 11 pp., (42,3).
Notes on various topics from folder, „Paris, Pfingsten 1931. Und vieles andere,“: I, II, III, IV,V, insg. 44 pp. (46,5).
Manuscript, "Über die Umkehrung der Naturgesezte," 20 pp., 12 Mar 31 (42,3).
Unpublished draft, "Materiewellen im Schwerefeld," 9 pp., [1931] (42,3).
Manuscript, "Über Hänkelsche Lösungen," 8 pp., [c. 1931] (42,3).
Notes for lectures, "Korpuskularphysik," 11 pp., 1932 (43,8).
Notes and manuscript, "Starkeffekt im veränderlichen Feld," 10 pp., [1932] (42,3).
Folder of papers, „Verstreute Einzelideen; eventuell für Dissertationen,“ besteht aus einzelnen Dateien: Verstreute Einzelideen..., Verstreute Einzelideen..., Isotropieschwankungen, Theoretischer Beweis für den Drehimpuls zirkular polarisierten Lichtes, Verstreute Einzelideen..., Zu Flügge, Störung im Streckenspektrum, Die Rolle der Gruppe der Bewegungen in der klassischen Physik und in der Quantenmechanik, Idee, Haben Isotope verschiedene reversible Zersetzungsspannungen, insg. 24 pp., [c. 1933] (42,3).
Manuscript draft of Nobel address and related documents from Stockholm: I, II, insg. 30 pp., Dec 33 (44,1).
"Aus einer Vorlesung über Quantentheorie, Sommer Semester 1933, Berlin, von Erwin Schrödinger,“ 2 pp. (43,8).
Exposition of quantum mechanics and its interpretation for Oxford Seminar, 46 pp., 1933-34 (46,6).
Notes on various topics: Austauschentartung, Milne-Modell und Dichtematrix, Nebenbei 1934/35, Notes, Umschreiben von Dirac Buch, S. 218 ff. für Fermistatistik, Erhaltungssatz - Zusammenhang, Notes, Notes, insg. 45 pp., [c. 1934-35] (42,4.1-8).
Notebook, "Elektron im magn. Dipolfeld," 38 pp., 1934-35 (42,5).
Manuscript and correspondence for "¿Son lineales las verdaderas ecuaciones del campo electromagnético?" [Anales de la Sociedad Española de Fisica y Quimica 33 (1935): pp. 511-517], 23 pp., 1935 (42,5).
Notebook, "Gespräche über den Tod," 34 pp., [c. 1935] (43,3).
Notebook on Fermi's theory of beta decay, Eddington's theory of protons and electrons, de Broglie and sound waves, 22 pp., [1936] (42,6).
Notebook, "Grundlagenfragen. Dichtematrix" 76 pp., [c. 1936] (46,7).
Notes, correspondence, and drafts relating to the 1937 Bologna conference, 25 pp. (42,6).
Notes for lectures on quantum statistics, 29 pp., originally from Berlin, 1928-29, reworked for Graz 1937-38 (42,7).
"Lebenslauf" and bibliography, 8 pp., 2 Jul 38 (39,1).
Lecture notes and drafts, "The so-called new Forms of Statistics," 58 pp., 1938 (42,7).
„Gent. Ganz vermischte Notizen,“: "Gent. Ganz vermischte Notizen,“ "Gent. Ganz vermischte Notizen" - Aberglauben in der Physik, "Gent. Ganz vermischte Notizen" - Über einen euklidischen Raum von endlichem Volumen, insg. 19 pp., [1938391 (46,8).
Unfinished draft, "Two Remarks on Bose-Einstein Condensation," 9 pp., [1939] (42,8).
Three notebooks on various topics in quantum mechanics and its interpretation: Allerlei, 1939, Quantensprung, Principium Individuationis insg. 124 pp., 1939-40 (42,9).
Popular writings: an indictment of our decaying civilization, 14 pp.; article on Austrian science, 4 pp.; review of Eddington's Tarner lectures, 6 pp.; objection to Blackett's popularization minimizing the role of gravitation in the nucleus, 3 pp., late 1930's (44,2).
Covers and first pages of eleven notebooks dealing chiefly with Born's nonlinear electron theory, 22 pp., [c. 1939-42] (46,9).
Notes on the freedom of the will: I, II, 14 pp., [1940s] (46,8).
Notes on Legendre polynomials marked "Sehr Wichtig," 17 sheets, [1940s] (46,9).
Popular writings on history, time's arrow, nonlinear optics, philology, biology and evolution: Historical Society, Nonlinear Optics, Comment on a paper read by Jakob Grimm in 1847, Time's Arrow, The Future of Understanding, The Bearing of Physics on Heredity, Mutation and Evolution, The Statistical Law in Nature, 70 pp., early 1940s (44,3).
Notes, "Programmatic," 2 pp., Jul 41 (42,10).
Notebook, "Biologica. I," 57 pp., 1942 (42,10).
Notebook, „Xmas 1948,“ containing notes on philosophy (not found, maybe this notebook is part of "Warum"), 35 pp. (43,3).
Popular writings: talks to the International Club; writings on university reform; „Do Electrons Think?“: To the International Club, To the International Club - 1. Thanking, To the International Club - 2. World Sovereignty, To the International Club - 3. Attitude towards Germany, 1. Introduction, 2. Taboos, 3. Eating and Drinking, Popular writings from the late 40's, 4. E.a.D. in general, 5. Last remarks (sketched), University Reform, Für "Die Furche" -Theoretiker und Praktiker, Do Electrons think?, insg. 96 pp., late 1940s (44,4).
Notebook, "Anderes, Innsbruck, 1950." Portions headed „Die Natur der Elementarteilchen“ and „Zitate aus Boltzmann's Prinzipe der Mechanik,“ 11 pp. (44,5).
Incomplete typescript draft, "July Colloquium 1952," 35 pp. (44,5).
Selected portions of three notebooks bearing on the interpretation of quantum mechanics: Zur Kritik (Are there Quantum jumps?), Fehlerhafte Interpretationen; Die logischen Grundfunktionen; Auch: G. Stephanson, Neue Feldtheorie..., Frühjahr 1955, insg. 46 pp., 1951-1955 (42,11).
Typescript version of a set of lectures, "Transformation and interpretation in Quantum Mechanics," 88 pp., 1952 (43,9).
Manuscript drafts for three "James Lectures," intended to be given at Harvard, 44 pp., [c. 1954] (44,6).
Lectures and popular articles: Antrittsrede Wien - Die Krise des Atombegriffs; "Die Atomtheorie,", insg. 55 pp., 1956-57 (44,7).
Two notebooks containing manuscript draft of „Was ist wirklich?“: Heft 1, Heft 2, insg. 50 pp., 1960 (44,8).
Five manuscript drafts: 1) "Wo halten wir als Art?" 2) Further thoughts on „What is life?“: Introduction, The two kinds of Inheritance, The lime-light of consciousness 3) "Why the Truth?" 4) Antinomies of set theory; 5) "What Physical Device Fixes Memory?", insg. 50 pp., [after 1940] (44,10).
Notebook, „Phys. Seminar,“: Phys. Seminar - Vibrierende Membranen, Phys. Seminar 30 pp., [undated] (39,1).
Notebook, "Vorträge über Meteorologie an der Fl. O. Sch. in Wr. Neustadt," 40 pp., [undated] (39,2).
Unidentified notes on electromagnetic waves,. 3 pp., [undated] (40,5).
Introduction to lectures on quantum mechanics at Dublin, 3 pp., [undated] (43,9).
Disposition for a book on elementary quantum mechanics, plus half of a first chapter, "The Original Form of Quantum Theory and its Conceptual Grievances," 22 pp., [undated] (43,9).
Various notes and drafts on philosophy, biology, taxation, interpretation of physics, etc., 9 items: Interpretation of Physics, The Origin of Man and Society - Discussion Group, Fragment of an unpublished dialogue of Galileo, Bruchstück eines unveröffentlichten Dialog des Galileo, Aus Bertrand Rusell, History of Western Philosophy, p. 57. Einleitung zum Vieren Kapitel, "Heraklit", Taxation, Zum Vortrag Alpbach 1923, Various undated notes and drafts, Spinoza. Ethices Part III. Prop. II., Ein Gedicht über Gott, insg. 38 pp., [undated] (44,9).
Various small papers on philosophy and religion: Kontroverse: Willensfreiheit - Determinismus in der Physik, About science, Renaissance, that is precicely what we need....., Various small papers..., Various small papers..., Various small papers..., Mottos für "What is Life?" 31 pp., [undated] (44,11).
Memoir, "Schrödinger's 1928 Lectures on Wave Mechanics," by Bun-ichi Tamamushi (66,13).

ZENTRALBIBLIOTHEK DER PHYSIKALISCHEN INSTITUTE, Universität, Vienna, Austria. See description in Chapter IV, prefatory to microfilms No. 37, 39-44, and 46.
BOHR COLLECTION, Copenhagen, Denmark. Letters to Bohr, 24 May 24, 21 Sep 26, 27 Sep 26, 28 Sep 26, 23 Oct 26, 25 Nov 26, 5 May 28, 18 Jan 29, 25 Sep 30, [25 Apr] 31, [1931], 29 Apr 31, 29 Sep 32, 5 letters 1944-52. See: Bohr.
BEDFORD COLLEGE LIBRARY, University of London, London, England. Letters to W. Wilson, 4 Nov 35, 3 letters 1950-52, 1 letter [undated].
DUBLIN INSTITUTE FOR ADVANCED STUDIES, Dublin, Ireland. See description in Chapter IV, prefatory to microfilms No.37, 39-44, and 46.
RIJKSMUSEUM VOOR DE GESCHIEDENIS DER NATUURWETENSCHAPPEN, Leiden. The Netherlands. 9 letters to Ehrenfest with copies of answers, 1920-33.
LIBRARY OF THE SWEDISH ACADEMY, Stockholm, Sweden. Letter to Oseen, 15 Feb 37, .1 letter [undated].
PAULI COLLECTION, Zurich, Switzerland. Letters to Pauli, 12 Jul 20, 13 Feb 21, 7 Nov 21, 8 Nov 22, 15 Dec 26, 4 letters 1940-57. See: Pauli.
BIBLIOTHEK DER EIDGENÖSSISCHEN TECHNISCHEN HOCHSCHULE, Zurich, Switzerland. Letters to Weyl, 6 Nov 29, 11 Dec 29, 1 Apr 31, 8 Mar 35, 8 letters 1941-47, 1 letter [undated]. See: Weyl. Lecture, „Atomenergie.“ Manuscript, 13 pp., Dublin, 10 Jul 54.
BURNDY LIBRARY, Norwalk, Conn. Manuscript in Weiner Collection.
EINSTEIN COLLECTION, Princeton, N.J. Correspondence with Einstein, 22 items 1925-39, 32 items 1943-47, c. 32 items 1950-54.
DUKE UNIVERSITY ARCHIVES, Durham, N.C. Letters to London, 17 Nov 31, 9 Jun 32, 2 letters 1939. See: London.