The documents calendared in this volume consist of Petty Custom recordings of general imports and exports (other than wine, wool and hides) by alien merchants, and of cloth exports by alien and denizen merchants, in the port of London from Michaelmas 1480 to Michaelmas 1481, together with less detailed accounts for wool, wine and other commodities. Petty Custom accounts were kept by royal officials in each customs port, who recorded each ship entering or leaving, the merchant in whose name goods were shipped and each item of customable cargo.