Autrefois:

• Mar 04 Casimir Pulaski born, 1747
• Mar 04 First Cray-1 shipped to Los Alamos
• Mar 04 Emile Berliner invents the microphone, 1877
• Mar 04 First meeting of Congress in N.Y.C., 1789
• Mar 04 Vermont Admission Day (admitted as 14th US state in 1791)