In the Special List of Record Group 118 (Records of the U.S. Attorney) preserved in San Francisco, and in San Francisco Chronicle of 19 January 1918, we find report of Taraknath Das's trial as defendant. Kumar, too, was mentioned during the 1917-18 San Francisco Trial consisting of 'The German Hindu Conspiracy' and 'Violations of U.S. Neutrality 1913-20.' He was accused of having "formed party in Shanghai in 1914.
This information is preserved in the Special List of Record Group 118 (U.S. Attorney records) in San Francisco, as reported in the San Francisco Chronicle on January 19, 1918. Taraknath Das's trial as defendant and Kumar's involvement in the 1917-18 San Francisco Trial are documented, including his alleged formation of a party in Shanghai in 1914.