The National Speleological Society of the USA was later founded in 1941 ( originally formed as the Speleological Society of the District of Columbia on May 6, 1939 ) and the Swiss Society of Speleology created in 1939 in Geneva, but the first speleological institute in the world was founded in 1920 in Cluj-Napoca, Romania, by Emil Racovita, a Romanian biologist, zoologist, speleologist and explorer of Antarctica.

The themed anthology series would become a sensation with the introduction of Batman in issue # 27 ( May 1939 ).

In late 1939 he brought the Duke of Windsor back from self-impodsed exile in France and in early May 1940, Mountbatten led a British convoy in through the fog to evacuate the Allied forces participating in the Namsos Campaign during the Norwegian Campaign.

Over this period, except for the war years, during which he served with the United States Air Force, he developed British Guiana Airways Ltd. ( registered 27 May, 1938 ) and operating regular internal services since 1939.

Howard Carter ( 9 May 18742 March 1939 ) was an English archaeologist and Egyptologist known for discovering the tomb of 14th-century BC pharaoh Tutankhamun.

Following the outbreak of the Second World War in September 1939, Alexander brought the 1st Infantry Division to France, where, in late May 1940, he successfully led the division's withdrawal to Dunkirk.

25 May 1939

One of the consequences of Ribbentrop's heavy-handed behaviour was the signing of the Anglo-Turkish alliance of 12 May 1939.

Ribbentrop's efforts were crowned with success with the signing of the Pact of Steel in May 1939, though this was accomplished only by falsely assuring Mussolini that there would be no war for the next three years.

On 25 May 1939, Ribbentrop sent a secret message to Moscow to tell the Soviet Foreign Commissar, Vyacheslav Molotov, that if Germany attacked Poland " Russia's special interests would be taken into consideration ".

Along the same lines, Ribbentrop told the Italian Foreign Minister Count Galeazzo Ciano on 5 May 1939 " It is certain that within a few months not one Frenchman nor a single Englishman will go to war for Poland ".

In May 1939, as part of his efforts to bully Turkey into joining the Axis, Ribbentrop had arranged for the cancellation of the delivery of 60 heavy howitzers from the Škoda Works, which the Turks had paid for in advance.

Karl Bernhardovic Radek () ( 31 October 1885 – 19 May 1939 ) was a socialist active in the Polish and German movements before World War I and an international Communist leader after the Russian Revolution.

" Carr argued that the Soviet Union's replacement of Foreign Minister Litvinov with Molotov on May 3, 1939 indicated not an irrevocable shift towards alignment with Germany, but rather was Stalin ’ s way of engaging in hard bargaining with the British and the French by appointing a proverbial hard man, namely Molotov, to the Foreign Commissariat.

< tr bgcolor ="# DDEEFF ">< td > 25 < td > Sir Bertram Stevens < td > United Australia < td > 16 May 1932 < td > 4 August 1939

< tr bgcolor ="# DDEEFF ">< td > 26 < td > Alexander Mair < td > United Australia < td > 5 August 1939 < td > 16 May 1941

Reinhard Heydrich ( middle ) with Heinrich Himmler ( left ), Karl Wolff ( right ), and an unidentified assistant ( front ) at the Berghof ( residence ) | Obersalzberg, May 1939

On May 27, 1939, the first U. S. synchronized swimming competition took place at Wright Junior College between Wright and the Chicago Teachers ' College.

Józef Beck, minister of foreign affairs delivers his famous ' Honour ' speech in the Sejm, 5th May 1939.

Although the battle was a Soviet victory, the Japanese dismissed it as an inconclusive draw, and on 11 May 1939 decided to move the Japanese-Mongolian border up to the Khalkhin Gol River by force.

* May 18 – Ernie Davis, American football player, first African-American to win the Heisman Trophy ( b. 1939 )

* May 28 – Tommy Ladnier, American jazz trumpeter ( d. 1939 )

* May 31 – Pope Pius XI ( d. 1939 )

* May 9 – Howard Carter, British archaeologist ( d. 1939 )

On May 6th, Morgan, who had returned, received from Washington orders to `` send out patrols under vigilant officers '' to keep near the enemy.

After the death of his wife Abby May on November 25, 1877, Alcott never returned to Orchard House, too heartbroken to live there.

He returned to the Western Front in early 1916 as a general staff officer in the 33rd Division and took part in the Battle of Arras in April / May 1917.

" Roache was the only remaining member of the original cast until Dennis Tanner ( Philip Lowrie ) returned on 12 May 2011, and is currently the longest-serving actor in Coronation Street and in British and global soap overall.

After an absence of three years, Tracy Barlow returned on 7 May 2010, in a plot to reduce her sentence by convincing cellmate Gail to confess to Joe's murder.

Founding drummer Hester left in May 1994, citing family reasons, but briefly returned for their Farewell to the World concerts in Melbourne and Sydney in 1996.

Charles returned from exile on 23 May.

He returned with haste to the West, reaching Emesa by 10 May 290, and Sirmium on the Danube by 1 July 290.

South East Asia Command was disbanded in May 1946 and Mountbatten returned home with the substantive rank of rear-admiral.

The final returned to Wembley in May 2007.

She returned to New York in May 1957, where she reunited with Fiorello four months before he died.

The German producer Artur Brauner expressed interest in remaking The Indian Tomb ( a story that Lang had developed in the twenties that was ultimately taken from him by studio heads and directed instead by Joe May ), so Lang abandoned his plans for retirement and returned to Germany in order to make his " Indian Epic ".

The fourth round returned to Geneva in 1955 and lasted until May 1956.

Telemann returned to Hamburg by the end of May 1738.

Owen named the town New Harmony, and by May, the last of the Harmony Society's remaining members returned to Pennsylvania.

Alexander returned to Britain in May 1920 as a major, second in command of 1st Battalion Irish Guards ; in May 1922, he was promoted substantive lieutenant-colonel and appointed commanding officer.

Alexander was then in February 1928 promoted to colonel ( backdated to 14 May 1926 ) and was the next month appointed Officer Commanding the Irish Guards Regimental District and 140th ( 4th London ) Infantry Brigade in the Territorial Army a post he held until January 1930, when he again returned to study, attending the Imperial Defence College for one year.

In March 1937, Alexander was appointed as one of the aides-de-camp to the recently acceded King George VI and in May returned to the United Kingdom to take part in this capacity in the state procession through London during the King's coronation.

National elections held on 13 May 2001 returned Berlusconi to power at the head of the five-party center-right " Freedom House " coalition, comprising the prime minister's own party, Forza Italia, the National Alliance, the Northern League, the Christian Democratic Center, and the Democrats ' Center Union.

Although the party's share of first preference votes increased by some 22 % from 3. 84 % to 4. 69 % nationally in the 2007 general election, held on 24 May 2007, the party failed to increase the number of TDs returned.

At about noon on 2 May 1997, Major officially returned his seals of office as Prime Minister to The Queen.

Slidell returned to Washington in May 1846, having been rebuffed by the Mexican government.

In May 2009, organisers of the Edinburgh International Film Festival returned a £ 300 grant from the Israeli Embassy after speaking with Ken Loach.

After being evacuated from Boulogne on 21 May, he returned to France in mid-June ( now representing the Daily Telegraph in addition to The Times ).