Cover with printed 'D.C. Henry, American Mission - Gore, Gambela, Sudan' at top left franked with block of four 1927 15m bright blue & chestnut 'Small Camel' issue (SG 43) tied by GAMBEILA cds's, this village being located in a leased enclave in Ethiopia. Addressed to USA with light MALAKAL transit cds on reverse. Scarce origination.