In 1912, Dave Kohn wrote a five-act dramatic play named Bismarck, the Iron Chancellor, which was prepared for a tour in 1913, but this was cancelled due to the outbreak of war the following year.
[1] His 1917 song "The Ocean Must Be Free", cowritten with Lew Flint, was published with the caption "Dedicated to the United States Army and Navy to encourage enlistment".
"[5] After the war, it was advertised in a 1919 issue of the trade publication National Farmer and Stock Grower as a "splendid international song...Our boys could not help fighting for it.
[8][9] He also cowrote the lyrics to 1919's "Peace Reigns on Earth" with Carolyne Lamberton, music by Bert Keene and Ernest L.
[11][12] Kohn ran a book shop on 10th Street in St. Louis in the 1920s, where he would write songs for customers on demand.