A Japan-United States Seminar on Catalysis was held in Tokyo and Kyoto, Japan, on May 5–10, 1968. The seminar was organized on the Japanese side by Professors Osaki and Morikawa of the Tokyo Institute of Technology and on the United States side by John Turkevich of Princeton University. The seminar was sponsored by the United States-Japanese Scientific Cooperation Program initiated by President Kennedy and Premier Saito. The program is administered in the United States by the National Science Foundation, with Dr. Walter Hodge, Director, and Richard S. Riess, Staff Associate. On the Japanese side, it was administered by the Japanese Society for Promotion of Research.