American Library Association >> https://www.ala.org/ 

The American Library Association (ALA) is the oldest and largest library association in the world.

Founded on October 6, 1876 during the Centennial Exposition in Philadelphia, the mission of ALA is “to provide leadership for the development, promotion and improvement of library and information services and the profession of librarianship in order to enhance learning and ensure access to information for all.”

America Library Association- Conferences and Events >> https://www.ala.org/conferencesevents/

ALA Chapters Directory >> https://www.ala.org/aboutala/affiliates/chapters/state/stateregional