December 17, 1930
ON THIS auspicious anniversary of your birth, I desire to send to Your Majesty my greetings and best wishes for your happiness and welfare.
HERBERT HOOVER
[His Majesty Alexander I, King of Yugoslavia, Belgrade]
Herbert Hoover, Message to King Alexander I of Yugoslavia Offering Birthday Greetings. Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/211047