• USA
    5 March 1937
  • Denmark
    24 July 1937
  • Sweden
    20 August 1937
  • Finland
    26 September 1937
  • Croatia
    12 November 1937
  • Hungary
    12 November 1937
  • Portugal
    1 December 1937
  • Spain
    25 November 1943
    (Madrid)
  • Spain
    6 December 1943
    (Barcelona)