POSTAL HISTORY: 1944 (Sep 6) commercial usage of an airgraph from a Zanzibari trading firm to a supplier in England with that firm's 'RECEIVED/16DEC1944' arrival cachet on the reverse. Two months transit time indicates a significant interruption to service. [The only Zanzibar airgraph we have seen]
POSTAL HISTORY: 1955 social usage of formular aerogramme to Australia with Sultan 10c x5 (three on the reverse), message between penpals. [William Wells was heavily involved in the scouting movement and this may well have been from a fellow scout]