A. Scientific Writings (24 boxes)
1.1-1.2. Books; 2.1-2.10. Contributions to books; 3.1-3.225. Periodicals; 4.1-4.60. Unpublished writings.
B. Non-scientific Writings (33 boxes)
1.1-1.12. Books; 2.1-2.21. Contributions to books; 3.1-3.392. Periodicals; 4.1-4.115. Unpublished writings; 5.1-5.69. Broadcasts.
C. Birkbeck College (1 box)
1-11. Correspondence, photographs, visitor's books, lectures, annual reports, etc.
D. War (2 boxes)
1-13. Diaries, correspondence, photographs, maps, reports, notes, etc.
E. Peace (8 boxes)
1-17. Correspondence and papers dealing with various countries; congresses and meetings; World Peace Council; conferences; press; and other papers.
F. Science Policy (2 boxes)
1-14. Correspondence and papers.
G. Special Activities (1 box)
1.1-1.5. Ghana, University Education; 2.1-2.7. Meteorite Research; 3. Crystal Data Centre.
H. Scientific Organisations (6 boxes)
1-33. Papers of organisations to which Bernal belonged or was closely associated.
I. Non-scientific Organisations (3 boxes)
1-47. Papers of organisations to which Bernal belonged or to which he was closely associated.
J. Correspondence (9 boxes)
1-269. Correspondence with individuals and with organisations to which Bernal did not belong.
K. Publishers (1 box)
L. Meetings and Visits (5 boxes)
1-87. Correspondence concerning the organisation of meetings and visits.
M. Scientific Notes and Ideas (2 boxes)
1-24. Notes found at Birkbeck and among other papers, arranged alphabetically by topic.
N. Non-scientific Notes and Ideas (2 boxes)
1-12. Notes arranged alphabetically by topic where possible.
O. Personal (10 boxes)
1-24. Biographical material, family letters, last illness, greetings, certificates, diaries, and miscellaneous other material.
P. Material collected after 15.9.1971 (3 boxes)
1-17. Correspondence; obituaries; papers of Anita Rimel, Bernal's P.A., 1940s-1969; and other material.
1-4. Scrolls (7); analysis of a Picasso drawing (1 envelope); the 1948 plans of Riley House (1 packet); and an album containing press cuttings (1 volume).
R. Restricted material (6 boxes)