American Civil Liberties Union (ACLU) — Founded Date: Jan 1920

Note: The Wikipedia source explicitly states the ACLU's formation date as 'January 19, 1920' with the ISO format '1920-01-19' in parentheses. This directly and precisely matches the claimed founding date of 1920-01-19. The date is presented in the infobox and confirmed in the body text stating 'founded in 1920'.

Note: The source text explicitly states in the infobox that the ACLU's formation date was 'January 19, 1920' with the ISO format date '1920-01-19' provided. This directly and precisely matches the claimed founding date of 1920-01-19.

Note: The source text confirms the ACLU was founded in January 1920 and provides the context of the Palmer Raids occurring in 'November 1919 and January 1920.' However, the source does not specify the exact date of January 19, 1920. The additional context provided states 'Founded January 19, 1920,' but this is not explicitly stated in the source text excerpt itself. The month and year are confirmed, but the specific day is not verified by the source material provided.