Books by Upton, George P. (George Putnam) (sorted alphabetically)
- Maria Theresa W. O. von Horn
- Maximilian in Mexico J. Kemper
- Memories: A Story of German Love F. Max Müller
- Mozart's Youth Franz Hoffmann
- Nibelungs Ferdinand Schmidt
- Prince Eugene, the Noble Knight L. Würdig
- Queen Maria Sophia of Naples, a Forgotten Heroine Carl Küchler
- Standard Cantatas: Their Stories, Their Music, and Their Composers George P. Upton
- Standard Light Operas, Their Plots and Their Music George P. Upton
- Standard Operas: Their Plots, Their Music, and Their Composers George P. Upton
- Standard Oratorios: Their Stories, Their Music, And Their Composers George P. Upton
- Swiss Heroes: An Historical Romance of the Time of Charles the Bold A. A. Willys
- Ulysses of Ithaca Homer and Karl Friedrich Becker
- William Penn Hugo Oertel
- Youth of the Great Elector Ferdinand Schmidt