May 31, 1912: Henry Martin Jackson is born in the home of his parents, Peter and Marine Jackson, at 3602 Oakes St. in Everett. He is the fifth and last of the Jackson children. He had three sisters — Gertrude, Agnes and Marie — and one brother, Arthur.
1930: Graduated from Everett High School.
1935: Graduated from the University of Washington Law School.
1938: First elected to office as Snohomish County prosecuting attorney. He defeated Democratic incumbent Al Swanson in the primary and Republican Tom Stiger in the general election.
1939: Jackson ordered the elimination of slot and pinball machines in the county.
1940: First elected to the U.S. House of Representatives. He defeated Democratic opponents Howard Bargreen and Pat Hurley in the primary and Republican Payson Peterson in the general election.
1942: Re-elected to a second term after defeating Peterson.
1944: Won a third term by beating Peterson.
1946: Won a fourth term by again beating Pearson. The margin of victory — 53 percent to 47 percent — was the closest of the five contests between Jackson and Peterson.
1948: Won a fifth term by defeating Peterson.
1950: Won a sixth term by defeating Republican Herb Wilson. Turned down President Harry S. Truman’s offer to be U.S. Undersecretary of the Department of the Interior.
1952: First elected to the U.S. Senate. Jackson defeated incumbent Republican Sen. Harry P. Cain by a margin of 56.2 percent to 43.5 percent.
1958: Re-elected to a second term by beating Republican William B. Bantz.
1960: Considered as a running mate for John F. Kennedy, he served as chairman of the Democratic National Committee.
1961: Jackson meets Helen Hardin, receptionist for New Mexico Sen. Clinton P. Anderson, on Jan. 4. They marry on Dec. 16.
1963: Daughter Anna Marie Jackson was born.
1964: Won a third term by beating Republican Lloyd J. Andrews.
1966: Son Peter Jackson was born.
1968: Turned down President Richard Nixon’s offer to be Secretary of Defense.
1970: Won a fourth term. He defeated Democrat Carl Maxey in the primary, then beat Republican Charles Elicker in the general election with 82.4 percent.
1972: Lost the Democratic presidential nomination to George McGovern.
1976: Ran for president again, losing the nomination to Jimmy Carter. Jackson dropped out early enough to file to run for Senate again. Won a fifth term by defeating Republican George M. Brown.
1982: Won a sixth term by beating Republican Douglas Jewett and two Independent candidates, King Lysen and Jesse Chiang.
1983: Died on Sept. 1 at age 71.
1984: Posthumously awarded Presidential Medal of Freedom by President Ronald Reagan.