Papyri holdings are mainly in two collections: Papyrus Fragments (M1421) and Classics Department Papyri Collection (cataloging in process).
Medieval manuscript holdings are listed in “Pre-1600 MSS in Special Collections”:
http://libguides.stanford.edu/content.php?pid=80081&sid=610486
Holdings of non-Western European medieval manuscript holdings will be posted on this page as more information becomes available.
Please send inquiries about manuscript holdings to David Jordan (dajordan@stanford.edu).