The Varying Sizes of World War One Sheet Music
Original Cost of WWI Piano Sheet Music
Patriotic Popular Songs of America at War (WWI) - Leo Feist Publishers

Other World War I Music links of interest:

	Parlor Songs Magazine article about WWI Sheet Music
	Library of Congress collection of WW1 songs
	Brown University: World War I Sheet Music digital archive
	University of Missouri: World War I Sheet Music Collection Home

Links about sheet music in general:

	How to Collect Old Sheet Music - eHow.com
	Duke University's American Sheet Music Archive