1.
Jan. 20: Richard Nixon is sworn in as the 37th President of the United States of America.
3.
March 27: Shortly after they're married, John Lennon and Yoko Ono have a honeymoon "Bed-In" for peace in Amsterdam.
5.
July 20: Neil Armstrong and Buzz Aldrin are the first humans to land on the moon.
6.
Aug: 8: The Beatles are photographed by Iain Macmillan on a zebra crossing on Abbey Road, the title of their album released that same year.
7.
Aug. 9: Sharon Tate, eight-and-a-half months pregnant with Roman Polanski's son, is murdered in her home by the Manson family.
8.
Aug. 18: Jimi Hendrix closes out the three-day Woodstock Film Festival in Bethel, N.Y.
9.
Sept. 13: The first-ever episode of Scooby-Doo, Where Are You! is broadcast on CBS.
10.
Sept 26: The Brady Bunch makes its debut on ABC.
11.
Oct. 5: Monty Python's Flying Circus premieres on BBC.
12.
Nov. 10: Sesame Street premieres on the National Educational Television (NET) network.
Mad Men 's final season begins Sunday, April 13, at 10 p.m. ET on AMC.