Spotted this today in a Washington Post 1964 newspaper...

[former9thward]

15. The U.S. Senate historians disagree with you.

Using the filibuster to delay debate or block legislation has a long history. The term filibuster, from a Dutch word meaning "pirate," became popular in the United States during the 1850s when it was applied to efforts to hold the Senate floor in order to prevent action on a bill.

https://www.senate.gov/reference/Index/Filibuster.htm#:~:text=The%20term%20filibuster%2C%20from%20a,prevent%20action%20on%20a%20bill.

The Senate tradition of unlimited debate has allowed for the use of the filibuster, a loosely defined term for action designed to prolong debate and delay or prevent a vote on a bill, resolution, amendment, or other debatable question. Prior to 1917 the Senate rules did not provide for a way to end debate and force a vote on a measure. That year, the Senate adopted a rule to allow a two-thirds majority to end a filibuster, a procedure known as "cloture." In 1975 the Senate reduced the number of votes required for cloture from two-thirds of senators voting to three-fifths of all senators duly chosen and sworn, or 60 of the 100-member Senate.

https://www.senate.gov/about/powers-procedures/filibusters-cloture.htm