Short, advanced‐level science courses organized on an international basis may be eligible for financial support under the Advanced Study Institute Program of the North Atlantic Treaty Organization. The NATO Program, which is supporting 27 courses this year, is expected to continue next year to provide grants for administrative expenses, publication of proceedings, and underwriting the expenses of foreign visitors. The courses should have a scheduled duration of two weeks or longer, and should include participants from several countries. Those interested in organizing such courses in 1963 should write before December 1 to the Scientific Affairs Division, North Atlantic Treaty Organization, Place du Mare´chal de Lattre de Tassigny, Paris 16, France.