'BRITISH LETTER MAIL TO OVERSEAS DESTINATIONS 1840 TO UPU' BY JANE AND MICHAEL MOUBRAY. A fine hardback copy of the revised and latest edition of this exceptional publication, 511 pages, published by The Royal Philatelic Society of London in 2017. This book covers the rates, routes and regulations concerned with the dispatch of British letters to overseas destinations from 1840, when Rowland Hill's new scheme for cheap postage became a reality, until after the adoption of the Universal Postal Union treaty. A book for every collector's shelf. (Ref 104193).