Professional organizations are worth joining because:
American Catholic Philosophical Association (ACPA)
From the website, "Since 1926, scholars and thinkers, mostly based in Canada and the United States, have forged an unique tradition and community known as the "American Catholic Philosophical Assoication." Steeped in classical sources and cultivating the Catholic Philosophical heritage, this tradition is known for creative engagement with major philosophers of every era and bold responses to the themes and issues of contemporary philosophy."
Newman Association of America (NAA)
From the website, "The Newman Association of America takes as its purpose the dissemination of knowledge of the life, thought, and writings of John Henry Newman and the promotion of the cause of his canonization. This is done primarily through our annual Newman Conference held around the anniversary of Newman's death (August 11th)."