The Trust's main library is occasionally enriched by personal collections received by donation or bequest. One such is the Bawden library, which is a comprehensive resource on all aspects of Mongolian studies with a very thorough coverage of the Mongolian language, literature, history and religion. It includes books, periodicals and offprints. A substantial part of this collection is in Mongolian. This library contains materials published in the West as well as Mongolia and Inner Mongolia (China). Dr Gregory Possehl, one of our Trustees, has also donated a considerable library covering most aspects of the prehistoric and protohistoric archaeology of South Asia, centering around the Indus civilisation, and extending into many related fields. This is a complement to the Allchin collection and provides an invaluable resource for its subject. Another donation has been made by Ralph Pinder-Wilson, one of the Trust's Honorary Fellows. This valuable collection mainly concerns the art and architecture of Islamic South Asia.

The Trust also houses a collection of 292 coins, collected at various times by Sir Harold Bailey, including (amongst other types) Achaemenid, Greco-Bactrian, Parthian, Kushan, Sasanian, Indo-Parthian and Indo-Scythian coins.