It seems there is no available information about a nonprofit organization named "Amateur Athletic Union of the United States Inc" with the provided EIN (475161257) and the web reference is not relevant to the subject. However, I can provide information about a similar organization, the Amateur Athletic Union (AAU), which is a well-known entity in the United States.

Amateur Athletic Union (AAU)

The Amateur Athletic Union (AAU) of the United States, Inc., is not the subject of this query, but it is a prominent nonprofit organization in the field of amateur athletics. Here is a brief overview:

Overview

The Amateur Athletic Union (AAU) is a non-profit, volunteer-driven sports organization in the United States. It was founded on January 21, 1888, by James E. Sullivan and William Buckingham Curtis. The AAU is dedicated to promoting and developing amateur sports and physical fitness programs.

Programs

The AAU offers sports programs in over 45 sports categories, including the AAU Junior Olympic Games, which is one of the largest multi-sport events in the country. Other notable programs include the AAU Junior National Volleyball Championships and the AAU James E. Sullivan Award, which honors America's top amateur athletes.

Structure

The AAU has over 900,000 members and more than 100,000 volunteers across 55 district associations. It operates under a 501(c)(3) tax-exempt status and is headquartered in Lake Buena Vista, Florida.

History

Initially, the AAU served as a leader in international sports, representing the U.S. in international sports federations and preparing athletes for the Olympic Games. After the Amateur Sports Act of 1978, the AAU shifted its focus to providing grassroots sports programs for athletes of all ages.

Mission

The AAU's mission is to offer sports programs that promote physical, mental, and moral development through a volunteer base, ensuring good sportsmanship and citizenship.

Given the lack of specific information about "Amateur Athletic Union of the United States Inc" with the EIN 475161257, this article primarily describes the well-established Amateur Athletic Union (AAU). If further details are provided about the former, an article could be generated accordingly.