Gross, D.; Schmitt, C. A.; Stephan, Heinrich von; Zorn, E.; Bella C. Landauer Collection of Aeronautical Sheet Music (Smithsonian Institution. Libraries)
Gross, D.; Schmitt, C. A.; Stephan, Heinrich von; Zorn, E.; Bella C. Landauer Collection of Aeronautical Sheet Music (Smithsonian Institution. Libraries)
