Registered cover with manuscript 'Polish Settlement, Koja P.O. Kampala, Uganda, East Africa' return address on reverse franked with 1938 2 x 15c black & rose red and 2 x 1/- black & brown GVI issue (SG 137 & 145a) tied by two strikes of KOJA KAMPALA UGANDA cds in purple of the Red Cross run Polish Camp in Kampala with printed blue & white 'KAMPALA A' registration label alongside. Addressed to USA with various transit and arrival marks on reverse. A very scarce cancel, the Polish camp was only in operation from 1943 to 1950.