What happened June 1938 AD

In June 1938, he obtained his PhD from the Department of Mathematics at Princeton; his dissertation, Systems of Logic Based on Ordinals, introduced the concept of ordinal logic and the notion of relative computing, where Turing machines are augmented with so-called oracles, allowing the study of problems that cannot be solved by Turing machines. John von Neumann wanted to hire him as his postdoctoral assistant, but he went back to the United Kingdom.

Detective Comics, Inc. soon launched a fourth title, Action Comics, the premiere of which introduced Superman. Action Comics #1 (June 1938), the first comic book to feature the new character archetype—soon known as "superheroes"—proved a sales hit. The company quickly introduced such other popular characters as the Sandman and Batman.

On 5 June, the day the Germans began the second phase of their offensive (Fall Rot), Prime Minister Paul Reynaud appointed de Gaulle a government minister, as Under-Secretary of State for National Defence and War, with particular responsibility for coordination with the British.

In 1938, Texas governor J. V. Allred issued a proclamation stating in part: Whereas, the Negroes in the State of Texas observe June 19 as the official day for the celebration of Emancipation from slavery; and Whereas, June 19, 1865, was the date when General Robert [sic] S. Granger, who had command of the Military District of Texas, issued a proclamation notifying the Negroes of Texas that they were free; and Whereas, since that time, Texas Negroes have observed this day with suitable holiday ceremony, except during such years when the day comes on a Sunday; when the Governor of the State is asked to proclaim the following day as the holiday for State observance by Negroes; and Whereas, June 19, 1938, this year falls on Sunday; NOW, THEREFORE, I, JAMES V. ALLRED, Governor of the State of Texas, do set aside and proclaim the day of June 20, 1938, as the date for observance of EMANCIPATION DAY in Texas, and do urge all members of the Negro race in Texas to observe the day in a manner appropriate to its importance to them.