1841 – Thomas Cook opens first travel agency.
1865 – US Secret Service begins operating under the Treasury Department.
1891 – Hail kills 16 horses in Rapid City, South Dakota.
1929 – WOWO-AM, Indiana returns to air, 1 day after transmitter burns down.
1935 – FDR signs US National Labor Relations Act.
1937 – Spam, the luncheon meat is first introduced into the market by the Hormel Foods Corporation.
1950 – US forces enter combat in the Korean War for the first time, in the Battle of Osan.
1951 – Dr. William Shockley invents the junction transistor (Murray Hill, NJ)
1954 – B-52A bomber makes its maiden voyage.
1966 – NYC transit fare rises from 15 cents to 20 cents.
1966 – Saturn I rocket launched at Cape Kennedy.
1971 – 26th amendment to the US Constitution certified (reduces voting age to 18)
1983 – Woman gives birth to baby 84 days after brain death (Roanoke, Virginia)
1984 – Supreme Court weakens 70-year-old “exclusionary rule”- evidence seized with defective court warrants can now be used in criminal trials.
1994 – The United States announces it will no longer accept unrestricted immigration from Haiti.
1994 – Amazon.com founded in Bellevue, Washington by Jeff Bezos.
2016 – FBI releases report stating Hillary Clinton was “extremely careless” handling classified emails but doesn’t recommend prosecution.
2017 – 101 people reported shot, 15 killed in Chicago, Illinois over 4th of July weekend.
2018 – US Environmental Protection Agency head Scott Pruitt resigns amid allegations of misconduct.