found: Es war ein König von Thule, no date.
found: Georgetown University Library Archives online, viewed Oct. 19, 2012(Georgetown Magazine, May, 1977. They Came to Georgetown: Immigrant Musicians by George M. Barringer. In October, 1873, the Georgetown College Journal reprinted the following notice from the Philadelphia Catholic Standard: Georgetown College-The authorities of this time-honored institution have engaged as organist and professor of music at the College, Herr Anton Gloetzner, recently arrived from Munich, Bavaria. He is a pupil of the Maestro, Von Bulow; Gloetzner also was a composer; a Mass (Op. 12) for vocal quartet with organ accompaniment appeared in 1909) - http://www.library.georgetown.edu/special-collections/archives/essays/immigrant-musicians
found: DNB in VIAF, viewed Dec. 20, 2012(hdg.: Gloetzner, Anton)
found: LC database, Dec. 21, 2012(hdg.: Gloetzner, Anton)
found: Anton Gloetzner music manuscripts, 1870:finding aid (Anton Gloetzner was born in Weiden, Germany, on January 31, 1850. He died in Washington, D.C., on July 18, 1928)
notfound: New Grove online, Oct. 19, 2012