November 2, 1917 – The Balfour Declaration proclaims British support for the “establishment in Palestine of a national home for the Jewish people” with the clear understanding “that nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities”.
This declaration was in the form of a letter from the United Kingdom’s Foreign Secretary Arthur James Balfour to Walter Rothschild, a leader of the British Jewish community, for transmission to the Zionist Federation of Great Britain and Ireland.
The text of the letter was published in the press one week later, on November 9, 1917. The Balfour Declaration was later incorporated into both the Sèvres peace treaty with the Ottoman Empire, and the Mandate for Palestine. The original document is kept at the British Library. (from Wikipedia)
Israel Post issued two stamps in 1967 commemorating the 50th Anniversary of the Balfour Declaration. One stamp pictures Chaim Weizmann, the president of the World Zionist Organization who was responsible for engagement and negotiation with Secretary Balfour, who is pictured in the 2nd stamp.