As some of you know, my part-time job allows me to read, while I am getting peanuts. I have just finished The Japanese American Story by S. Floyd Mori.
In this book, was a link to www.densho.org. In their archives you will find some interviews about judo in the US during WWII from Japanese-American who were interned in one of the ten relocation camps in the US. As well after WWII.
These primary sources document the Japanese American experience from immigration in the early 1900s through redress in the 1980s with a strong focus on the World War II mass incarceration. The archives are growing as Densho continues to record life histories and collect images and records. We provide these resources to students, teachers, researchers, and the general public for educational purposes.
In addition you can research their collection of camp newspapers. Besides searching for judo articles, you can learn a lot about camp life during WWII.
There are interviews with Yosh Uchida, Frank Emi and others. I have not been to every portion of this site, but it has some history of judo going back to the 1920s and in different areas of the US.
You might enjoy this site. I have.