Case file for Keizaburo Koyama from the Federal Bureau of Investigation. Page 6 of 6.

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ddr-one-5-103 (Koyama014; 2016.23.14; NDD978084)

Dr. Keizaburo Koyama Family Collection

Photocopy of a declassified report on Keizaburo Koyama. A bench warrant was issued for Koyama for disregarding a signal, but no disposition was noted in his records. The files in the Multnomah County Jail did not show any information on Koyama's arrest or warrant on the matter. A report from the Credit Reporting Company from Rose Zurbuchen showed that Koyama had been sued twice and that his credit score was "very slow" due to his long history of not paying back loans in a time manner as some of his debt was dated back to 1932. The report also notes that Koyama paid $5 in 1940 and 1941 for dues to the Japanese Association of Portland, $2 above the usual fee of $3. A review of the Japanese Association of Japan, along with its Japanese Chamber of Commerce, found it to be dominated by native born Japanese members and that many of its activities indicated sympathies towards Japan. Due to this, the report states that these sympathies has a "retarding effect on the Americanization of second generation Japanese" as the officers of the organization were "very pro-Japanese."

January 14, 1942

Miscellaneous Documents


  • Zurbuchen, Rose
  • Jordan, I.
  • Portland Japanese Chamber of Commerce
  • Multnomah County Jail
  • Japanese Association of Portland

Oregon Nikkei Endowment; Portland, Oregon

Courtesy of Dr. Keizaburo Koyama Family Collection, Oregon Nikkei Endowment