Tweedledum and Tweedledee were characters from an English nursery rhyme. They also appear in Lewis Carroll's Through the Looking-Glass, and What Alice Found There. Their names have also become synonymous in western popular culture with derogatory slang for any two people who look and act in identical ways.

In the original nursery rhyme, Tweedledum and Tweedledee agreed to have a battle because Tweedledum accused Tweedledee of spoiling his nice new rattle. However, after a monstrous crow frightened them both, they forgot their quarrel.

In Lewis Carroll's Through the Looking-Glass and what Alice Found There (1871), the two fat little men are portrayed as twins who enact and quote their nursery rhyme for Alice. They also tell her the story of the Walrus and the Carpenter.

All published appearances of Tweedledum and Tweedledee  from before January 1, )-(95)}} are public domain in the US.

Some notable appearances are listed below:

*“Epigram on the Feuds between Handel and Bononcini,” by John Byrom (5 June 1725)
*“Tweedledum and Tweedledee” (nursery rhyme), first published in Original Ditties for the Nursery (ca. 1805)
*Through the Looking-Glass and What Alice Found There (1871)
*A New Alice in the Old Wonderland (1895)

*Alice in Wonderland (1886)

*Alice Through a Looking Glass (1928)

*Betty in Blunderland (1934)

*Alice #1-2
*World's Greatest Stories #
*The Adventures of Alice #2

*[http://en.wikipedia.org/wiki/Tweedledum_and_Tweedledee Wikipedia]
*[http://www.comicvine.com/tweedle-dee-and-tweedle-dum/4005-85101/ Comic Vine]
*[http://fables.wikia.com/wiki/Tweedle_Dum Tweedledum] & [http://fables.wikia.com/wiki/Tweedle_Dee Tweedledee] @ the Fables Wikia
*[https://fictional-characters-in-media.fandom.com/wiki/Tweedledum_and_Tweedledee Fictional Characters in Media Wiki]
*[https://www.youtube.com/watch?v=yqOkWsrTbRk Messed‐up Origins] (video)
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