Unpublished material held elsewhere

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.