English: Designated school textbooks during Japanese Occupation in Hong Kong
來自香港公共圖書館多媒體資訊系統,課本現在香港歷史博物館展覽,此照片廣為香港的中學歷史教科書所採用
From Hong Kong Public Libraries MMIS, textbooks are now being shown in the History Museum of Hong Kong, photo commonly used by the History textbooks in Hong Kong.
This work is in the public domain in the United States because it meets three requirements:
it was first published outside the United States (and not published in the U.S. within 30 days),
it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
it was in the public domain in its home country (香港) on the URAA date (1 January 1996).