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Did John Boyle O'Reilly introduce the term "Hyphenated-American" into the American lexicon?

I was reading a piece from the New York Times today, dated January 9, 1916.

The article is entitled "Says Irish Poet Coined the Hyphen: Father Cavanaugh [President of the University of Notre Dame] tells Diners Roosevelt Appropriated O'Reilly's Term."

Is this so? Where might I find this "first use" of the (in)famous term "hyphenated American" amongst O'Reilly's many works?

Thank you to anyone who might be able to help shed some light on this interesting and important assertion.

Yours Respectfully,
Peter