March 1948

Monday 08:

The United States Supreme Court rules that religious instruction in public schools violated the Constitution.

Wednesday 17:

Benelux, France, and the United Kingdom sign the Treaty of Brussels, a precursor to the NATO Agreement.

Saturday 20:

1948 – With a Musicians Union ban lifted, the first telecasts of classical music in the United States, under Eugene Ormandy and Arturo Toscanini, are given on CBS and NBC.