cover 1854 (20 Oct.) E.L. headed "Porus Post Office, Jamaica" sent to the British and Foreign Anti Slavery Society in London containing detailed answers to one of their questionnaires including "The general physical condition of the labouring class in Jamaica is healthy and superior to that of the peasantry in England", showing good strikes of "PORUS" and "KINGSTON" d.s. on reverse, vertical filing crease, otherwise fine