Page 548 - Jarvis & Wright: Jamaica Display to RPSL
        P. 548
     Jamaica: Postal Stationery
      Overseas Rates
                                 Cards Used for Overseas Rates (1916 to 1939).
                                              King George V ½d - issued 1912
                                   The 1d U.P.U. and Empire rate was reintroduced 19 Oct 1916.
                                                                                                  Kingston
                                                                                                  14 May 1936
                                                                                                    to -USA
                                 Cards Used for Overseas Rates (1939 to 1940).
                    On 1 Apr 1939 the UPU rate was raised to 1½d (but the Empire rate remained at 1d until 1950.
                                The 1½d rate only lasted until 30 Jun 1940, when it was raised to 2d.
                                   The King George VI Post Cards were Introduced in 1938
                 Kingston
                 13 Jun 1940
                 to the USA
     	
