<a href="http://idp.bl.uk/" target="_blank" rel="noreferrer noopener">The International Dunhuang Project: The Silk Road Online国际敦煌项目</a>
<a href="https://gallica.bnf.fr/accueil/en/content/accueil-en?mode=desktop" target="_blank" rel="noreferrer noopener">BnF Gallica</a>
<a href="https://www.youtube.com/watch?v=uIeX_XS6KHk&feature=youtu.be" target="_blank" rel="noreferrer noopener">What is Gallica</a>
<a href="https://shuge.org/" target="_blank" rel="noreferrer noopener">书格</a>
<a href="http://ccposters.com/" target="_blank" title="基督徒海报" rel="noreferrer noopener">Chinese Christian Posters</a>
Boston University, Henry Luce Foundation, Center Global Christian Mission
<a href="https://curiosity.lib.harvard.edu/chinese-rare-books" target="_blank" rel="noreferrer noopener">Chinese Rare Books by Harvard Digital Collections</a>
Harvard-Yenching's Chinese rare book collection
Harvard Library
<a href="https://www.loc.gov/collections/chinese-rare-books/?fbclid=IwAR0vrc_ZG12iP-y6hTG22dJA1vihQx9b4JI9ReLVO6p--LRuO0rjPSxggF8" target="_blank" rel="noreferrer noopener">Library of Congress Chinese Rare Book Digital Collection</a>
Library of Congress