The American UMI company's doctoral dissertations (PQDD): dissertations from 1938 to the most current, more subscriptions every year;

Chinese newspapers before 1949, periodicals, books in the Minguo period and some Chinese newspapers after 1949;

Sino-American diplomacy file of the late Qing Dynasty;

Doctoral dissertations collected by German Johannes Gutenberg-University Mainz;

Decrypt documents from British and American governments; Publications of the Japanese government;

Books about China published in the West before 1850, and information of early Western missionaries in China;

The Jiangxi Soviet Republic information (Chencheng's archives): 1931-1934;

People's biographies of different countries and the Dutch scholar Robert van Gulik's Chinese books collection (literature, calligraphy, paintings, music and more);

China in the Western eye, and multi-language dictionaries