- EbookOver the Front in an Aeroplane and Scenes Inside the French and Flemish TrenchesRalph Pulitzer
- EbookOver The Front In An Aeroplane, And Scenes Inside The French And Flemish Trenches [Illustrated Edition]Ralph Pulitzer
- EbookOver the Front in an Aeroplane, and Scenes Inside the French and Flemish TrenchesRalph Pulitzer
- EbookOver the Front in an Aeroplane, and Scenes Inside the French and Flemish TrenchesRalph Pulitzer