http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Volume 1 published September 1915, reprinted January 1916: volume 3 has imprint: New York, The H. W. Wilson company, 1920.
Volume 2 has title: Selected articles on national defense, including compulsory military service ... compiled by Agnes Van Valkenburgh.
"Volume III reprints a very limited number of articles and selected references from the earlier volumes."--Explanatory note, volume 3, p. [v].
Bibliography: volume 1, pages [xix]-xxix; volume 2 pages [xix]-liv; volume 3, pages [xxxi]-lx.