The two crossword solutions for the term PART OF NAACP (ABBR.) are ASSN and NATL. ASSN stands for Association, which is the official name of the National Association for the Advancement of Colored People (NAACP). NATL stands for National, which is the organization's main focus on civil rights issues at a national level. The NAACP was founded in 1909 and is the oldest and largest civil rights organization in the United States.