Encyclopedia of American Traitors was a hardcore punk band from Millersville, Pennsylvania, USA, that breifly existed from 1996 to 1999. The band posthumously released a discography CD in 2002. Band members were Andrew Martin, Keith Miller, Ryan Suffort, Steve Sakasitz, and Zachary Martin. Members also played in Cairo Capone. The band is often categorized as one of the early wave of "screamo" bands, which accentuated the more extreme hardcore influences in the emo sound, and are noted for their leftist politics.

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