A primary source collection of arrest warrants, field files, surveillance documents, and other internal files relating to the surveillance of suspected sympathizers to Japanese nationalism, WWII-era Custodial Detention Index, and files relating to the internment of Japanese Americans based on the Custodial Index.
https://librarysearch.library.utoronto.ca/permalink/01UTORONTO_INST/14bjeso/alma991106335999206196
Date published