3 April-Today's All facts
1968 - I've Been To The Mountaintop

In 1968, on this date, Martin Luther King Jr. delivers his final address at Bishop Charles J. Mason Temple in Memphis, Tennessee.

1883 - H.H. Reynolds patents Ventilator for rail car

Reynolds, H. H. Window Ventilator for Railroad Cars Apr. 03, 1883 Patent No.275,271