東書文庫/Tosho Bunko (Website of Japanese textbook Library)
広島大学図書館所蔵教科書コレクション/Hiroshima University Japanese Textbook Collection Repository site. Need to search in a search box to retrieve image files.
東京学芸大学機関リポジトリ／ETOPIA database Many pre-war textbooks used in colonial regions are digitized.
"Wartime Dissolution and Revival of the Japanese Language Schools in Hawaii: Persistence of Ethnic Culture" by Noriko Shimada
"The Foreign-Language School Controversy in Hawaii" by Carroll Atkinson
"Teaching Mikadoism : the attack on Japanese language schools in Hawaii, California, and Washington, 1919-1927" by Noriko Asato
"The Paradox of US Language Policy and Japanese Language Education in Hawaii" by Kimi Kondo
"A history of transnational education (ekkyo kyoiku) of the Japanese immigrants in the U.S., 1877-1945" by Yoshida Ryo
"Theory on immigrants and immigrants' education in traditionalism, the case of Shigetaka Shiga" by Okita Yukuji
"Historical research on education of Japanese immigrants, mainly education related articles in "Hawaii Shokumin newspaper" by Okita Yukuji
"Board of Hawaiian Evangelical Association and immigrant education : Americanizing/Christianizing Japanese nisei in interwar Hawaii" by Yoshida Ryo