Rank in Judo English language edition (1955) of "Illustrated Kodokan Judo", edited by the Kōdōkan, says: This statement was later clarified, however. Essentially, the dan-rank system was capped at 10 after the death of Kanō. In that respect, in the November 1963 issue of "Jūdō", the Kōdōkan's official magazine, the Kōdōkan responding to the question "Do the 11th and 12th Dan really exist?" clarifies that the hierarchy now stops at 10 and that the Kōdōkan does not envisage any nominations to these grades. There have only been fifteen 10th dan promotions awarded by the Kōdōkan in the history of Judo. Although "dan" ranks
Judo in Canada aspects of Judo. The most complete history of Canadian Judo is Glynn Leyshon's "Judoka: the history of Judo in Canada" (1998). However, while Leyshon is Professor Emeritus of Kinesiology at the University of Western Ontario, "Judoka" is a popular history published by Judo Canada rather than an academic study. Anne Doré's article "Japanese-Canadian Sport History in the Fraser Valley: Judo and Baseball in the Interwar Years" (2002) and Joseph Svinth's book "Getting a Grip: Judo in the Nikkei Communities of the Pacific Northwest, 1900-1950" (2003) both address the history of Judo in British Columbia. Luiz Moraes' PhD thesis in Education