Video: 'The Endangered Species Act: 40 Years at the Forefront of Wildlife Conservation'

(Friday, December 28, 1973) — The Endangered Species Act of 1973, designed to protect critically imperiled species from extinction as a “consequence of economic growth and development untempered by adequate concern and conservation,” was signed into law today by U.S. President Richard Nixon. Continue reading Endangered Species Act signed into law by U.S. President Richard Nixon 50 years ago #OnThisDay #OTD (Dec 28 1973) →

Video: 'Jefferson's Revolutionary Louisiana Purchase | The American Presidency with Bill Clinton (Season 1)'

(Tuesday, December 20, 1803) — The Louisiana Purchase was completed today as ownership of the territory was formally transferred from the French First Republic to the United States at the Cabildo, with a flag-raising ceremony in the Plaza de Armas, now Jackson Square. Continue reading United States nearly doubles in size as Louisiana Purchase completed 220 years ago #OnThisDay #OTD (Dec 20 1803) →

Video: 'Who killed JFK? Behind the scenes of Warren Commission'

(Friday, November 29, 1963, announced by the White House at 7:30 p.m. EST) — One week after U.S. President John F. Kennedy was fatally shot in Dallas, Lyndon B. Johnson, his successor, created the President’s Commission on the Assassination of President Kennedy, known unofficially as the Warren Commission, chaired by Supreme Court Justice Earl Warren to investigate the assassination. Continue reading President Lyndon B. Johnson names commission to investigate JFK assassination 60 years ago this hour #OnThisDay #OTD (Nov 29 1963) →

Video: 'President Lyndon B. Johnson's Address to Congress, November 27, 1963. MP505'

(Thanksgiving eve, Wednesday, November 27, 1963, 12:30 p.m. EST) — Five days after U.S. President John F. Kennedy was fatally shot in Dallas, Lyndon B. Johnson, his successor, delivered his “Let Us Continue” speech before a joint session of Congress, calling Kennedy the “greatest leader of our time,” and said that “American dreams have been vitalized by his drive and by his dedication.” Continue reading U.S. President Lyndon B. Johnson delivers ‘Let Us Continue’ speech to joint session of Congress 60 years ago this hour #OnThisDay #OTD (Nov 27 1963) →

Video: 'CBS News Live Coverage of The State Funeral of President Kennedy' (approximately 8 a.m.-4:30 p.m. EST)

(Monday, November 25, 1963, the caisson bearing President Kennedy’s casket leaves the U.S. Capitol for the White House at 10:59 a.m. EST) — The state funeral of U.S. President John F. Kennedy took place today in Washington, D.C., during the three days that followed his assassination on Friday, November 22, 1963, in Dallas, Texas. Continue reading Continuous televised coverage of state funeral of John F. Kennedy begins 60 years ago this hour #OnThisDay #OTD (Nov 25 1963) →

Video: 'KRLD-TV (DALLAS) RAW FOOTAGE: LEE HARVEY OSWALD IS SHOT! (NOVEMBER 24, 1963)'

(Sunday, November 24, 1963, 11:21 a.m. CST) — Lee Harvey Oswald, 24, charged with assassinating President John F. Kennedy, was mortally wounded this morning at the Police and Courts Building in downtown Dallas, Texas, in full view of millions of people watching on television. Continue reading Accused JFK assassin Lee Harvey Oswald fatally shot by Dallas nightclub owner Jack Ruby on live national television 60 years ago this hour #OnThisDay #OTD (Nov 24 1963) →

Video: 'Lyndon Johnson Swearing-in Nov 22, 1963'

(Friday, November 22, 1963, 2:38 p.m. CST) — 98 minutes after U.S. President John F. Kennedy was pronounced dead from gunshot wounds to his upper back and head while riding in an open presidential car in Dallas, Texas, Vice President Lyndon B. Johnson was sworn-in today as the 36th President of the United States by U.S. District Judge Sarah T. Hughes, on board Air Force One prior to the airplane’s departure from Dallas. Continue reading Lyndon B. Johnson sworn-in as 36th U.S. President following JFK’s assassination 60 years ago this hour #OnThisDay #OTD (Nov 22 1963) →