A group of seven World War I books, comprising excellent reference volumes for the collector or researcher! Includes: 'Collier's Photographic History of the European War' (New York: P. F. Collier & Son, 1918) 128pp. folio, with excellent photographs; 'The United States Navy from the Revolution to Date' (New York: P. F. Collier & Son, 1917), folio, not paginated, also with excellent illustrations; 'Fragments from France' by Capt. Bruce Bairnsfeather (New York: The Knickerbocker Press, n.y.), 4to., not paginated, recounting his experiences with many humorous illustrations; 'The War Depicted by Distinguished Artists' (New York and London: The Studio, 1918), folio, 98pp., with excellent images; 'I was There with the Yanks in France' by C. Leroy Baldridge (New York and London: The Knickerbocker Press, 1919) and a second paperback excerpt, both folio and unpaginated, containing Baldridge's sketches; and 'War Paintings and Drawings by British Artists' (U.S.S., 1919), folio, unpaginated, excellent images. Condition ranges from good to fair, with most exhibiting foxing and wear to covers.