April 13, 1902 (122 years ago)
•James C. Penney opens his first store in Kemmerer, Wyoming.

April 13, 1943 (81 years ago)
•The Jefferson Memorial is dedicated in Washington, D.C., on the 200th anniversary of Thomas Jefferson's birth.

April 13, 1970 (54 years ago)
•An explosion occurs aboard Apollo 13 in space. The three astronauts safely return to Earth on April 17