Judo in the United States however, the lecture had little effect on mainstream judo growth. The first American to actually study judo was Prof. Ladd from Yale University, in 1889. He trained at the Kodokan in Japan for about ten years; by 1908 about 13 Americans were training there. In 1919, Prof. John Dewey of Columbia University came to visit Prof. Ladd and Master Kano, many years later he took his knowledge back to Columbia and began the first U.S. college judo program. While some students were training in Japan there was some action in the U.S. Perhaps one of the most important figures in
Judo and Dong-Sik Yoon. Kano Jigoro's Kodokan judo is the most popular and well-known style of judo, but is not the only one. The terms judo and jujutsu were quite interchangeable in the early years, so some of these forms of judo are still known as jujutsu or jiu-jitsu either for that reason, or simply to differentiate them from mainstream judo. From Kano's original style of judo, several related forms have evolved—some now widely considered to be distinct arts: Kano's vision for judo was one of a martial way that could be practiced realistically. Randori (free practice) was a central part