XIII International Congress Organizing Committee
Officers of the International Leprosy Association responsible for the Scientific Program
| M. F. Lechat | President |
| R. H. Thangaraj | Secretary |
| W. F. Ross | Treasurer |
| R. C. Hastings | Editor of the JOURNAL |
Congress Officials
| M. F. Lechat | President of the Congress |
| R. H. Thangaraj | Secretary General of the Congress |
| H. E. M. de Bok | Organizing Secretary |
Local Organizing Committee on behalf of The Netherlands Leprosy Relief Association
| H. H. Cohen | Chairman |
| H. E. M. de Bok | Secretary |
| F. A. J. van Leuven | Treasurer |
| F. A. R. Barge | Member |
| D. L. Leiker | Member |
Committee of Recommendation
| H. J. B. Aarts | Member of Parliament |
| P. Bukman | Minister for Development Cooperation |
| J. H. Choufoer | Royal Dutch Petroleum Company |
| D. J. D. Dees | State Secretary of Welfare, Health and Culture |
| W. J. Deetman | Minister of Education and Science |
| E. Herfkens | Member of Parliament |
| H. F. van den Hoven | Unilever nv |
| A. A. Loudon | AKZO nv, President |
| A. S. Muller Royal | Institute of the Tropics, Department of Tropical Hygiene |
| J. J. van Rood | University of Leiden, Department of Immunology |
| E. Terpstra | Member of Parliament |
| D. J. K. Tommel | Member of Parliament |
| D. de Wied | Chairman of The Netherlands Academy of Sciences |