For this year's Quasquicentennial Celebration, The Rock Recorder Blog will post a chronological (as much as possible) history of Glen Rock, NJ. My main source for framing this series is an unpublished manuscript in the Glen Rock Historical & Preservation Society's archive, which was written by George Hubschmitt. This is Part #13 of the series. On April 6, 1917 the United States declared war on Imperial Germany. With the federalization of the New Jersey National Guard, ther