Sept. 11, 1875: First newspaper cartoon strip.
Sept. 11, 1941: Construction of the Pentagon begins. It is completed Jan. 15, 1943.
Sept. 11, 1946: First mobile long-distance car-to-car telephone conversation.
Sept. 11, 2001: Two passenger planes hijacked by terrorists crash into New York’s World Trade Center towers causing the collapse of both and deaths of 2,752 people. Terrorists hijack a passenger plane and crash it into the Pentagon in Arlington, Virginia, causing the deaths of 125 people. Attempt by passengers and crew of United Airlines Flight 93 to retake control of their hijacked plane from terrorists causes plane to crash in a Somerset County, Pennsylvania, field killing all 64 people on board.
Sept. 11, 2001: Jay-Z releases his album the “Blueprint.”
Sept. 12, 1992: Mae Jemison is the first African-American woman to go into space (aboard Endeavour STS-47).
Sept. 12, 2011: “Love On Top” single released by Beyoncé (Grammy Award Best Traditional R&B Performance 2013, Billboard Song of the Year 2012).
Sept. 13, 1788: New York City becomes the first capital of the U.S. under the Constitution.
Sept. 13, 1947: WPVI-TV Channel 6 in Philadelphia (ABC) begins broadcasting.