See, for instance, "Patriotic Services by Presbyterians," Philadelphia Inquirer, November 30, 1918, p. 16; As You Were, 1917-1918. Camp Jackson, SC: Base Hospital. 1919. p. 65.; and School Report of the City of Portland, Maine. Portland, ME: Marks Printing House. 1923. p. 64.
"America's Crusaders". World War I Sheet Music from the James Francis Driscoll Collection of American Sheet Music. Newberry Library. For men's voices. Retrieved 2 January 2020.
loc.gov
"America's Crusaders". World War I Sheet Music. Library of Congress. For mixed voices. Retrieved 2 January 2020.