Airplanes Military

Soldiers walk in formation on a road accompanied by several mounted men. Because of the soldiers' heavy clothing, it must be winter. This group may be the 26th Infantry, Theodore and Archibald Roosevelt's regim More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientif More

Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col More