1931-38 First flight covers comprising 1931 (June 5) Zanzibar to England via Mwanza, G.B to Zanzibar special Christmas flight via Mombasa (2); 1932 First London - Cape Town service cover from Zanzibar to Cape Town or G.B to Zanzibar, New Zealand to Zanzibar via Nairobi and Wilson Airways first flight, Athens to Zanzibar first acceptance via Dodoma and return flight from Zanzibar to Athens via Nairobi; 1933 Cawnpore to Zanzibar first flight via Cairo; 1934 first flights from Zanzibar to New Zealand or Australia; 1937 first all-up air scheme to G.B (2) or Nyasaland, or South Africa to Zanzibar; 1938 first all-up acceptance from Southern Rhodesia to Zanzibar. (16).

1931-39 Flown covers carried by Imperial and/or Wilson Airways, covers from Zanzibar (20) including items to Lebanon, India, Sweden, Poland, USA, etc., and covers to Zanzibar (6) from G.B, France, Hungary, Holland or Netherlands Indies. Also a mint sheet of ten of the first blue Air Mail etiquette of Zanzibar issued in 1932. (27).