1931 (Mar 10) Imperial Airways first airmail service East Africa-London, group of three items incl. Kisumu-London flight official yellow & blue "rising sun" cover with KUT 20c (3) incl. original Imperial Airways headed letter (water stains), cover from Dar-Es Salaam with KUT 30c pair sent on the same flight with Tanganyika Territory airmail label and newspaper cutting depicting the mail arriving in Croydon