ENThe purpose of this paper is to present a selection of documents preserved in the archives of the General Curia of the Society of Jesus concerning three seventeenth century Jesuits missionaries to China, namely: Michal Boym, Andrzej Rudomina and Jan Smogulecki. Thus, the first part of this presentation will provide a short introduction to these archives, while the second part will focus on documents related to the missionaries mentioned above. A list with a selection of these documents as well as some partial transcriptions has been provided in the appendix. [p. 417].