The Order Sons of Italy in America (OSIA) is the largest, oldest and most geographically represented organization of Americans of Italian heritage in the United States. It is a non-profit, non-sectarian, non-partisan fraternal organization, made up of 260 members located at 196 Adams Street, Newton MA 02458. It's also known as Nonantum or "The Lake" by some people.

The purpose of the entire organization is to enroll all eligible persons so that it may successfully promote national education, charitable fundraising, secure adequate laws for the benefit of its members, enrich and preserve the Italian culture and heritage and to combat discrimination while protecting and upholding the positive image of the people of Italian birth or descent.

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Source: http://www.newtonsonsofitaly.org/