The National Organization still in the process of formation, was invested with the power by the St. Louis Caucus, issued the Department of New York its Charter on May 24, 1919. The Charter of a Post of the American Legion in New York State was issued June 9, 1919, It was known as the President Theodore Roosevelt Post No1., the membership being confined to the delegates to the Paris and St. Louis Caucus. By October 15, 1919, National Headquarters reported 674 Posts chartered in New York State. (Department of New York Records),

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