A portrait of Father Johann Adam Schall von Bell, childhood friend and court astronomer to Qing emperor Shunzhi
Unknown author<span style="display: none;">Unknown author</span>
Unknown date<div style="display: none;">Unknown date</div>, before 1666
Scanned from Jonathan D. Spence, <i>In Search for Modern China</i>, 1st. ed., New York and London: Norton, 1990, illustration between pp. 36 and 37. <a href="//commons.wikimedia.org/wiki/Special:BookSources/0091744725" title="Special:BookSources/0091744725">ISBN 0091744725</a> (hardcover).